Post on 14-Jun-2015
04/13/23 AFTERSCHO☺OL's MATERIAL FOR PGPSE PARTICIPANTS
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GEOMETRY
AFTERSCHO☺OL – DEVELOPING CHANGE MAKERS
CENTRE FOR SOCIAL ENTREPRENEURSHIP PGPSE PROGRAMME –
World’ Most Comprehensive programme in social entrepreneurship & spiritual entrepreneurship
OPEN FOR ALL FREE FOR ALL
04/13/23 AFTERSCHO☺OL's MATERIAL FOR PGPSE PARTICIPANTS
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GEOMETRY
Dr. T.K. Jain.
AFTERSCHO☺OLCentre for social entrepreneurship
Bikaner M: 9414430763
tkjainbkn@yahoo.co.in
www.afterschool.tk, www.afterschoool.tk
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WHAT IS THE SUM OF ALL THE ANGLES OF A TRIANGLE?
• 180 DEGREE.
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WHAT IS THE SUM OF ALL THE ANGLES OF A SQUARE ?
• 360
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WHAT IS THE SUM OF ALL THE ANGLES OF A HEXAGON?
• 720 DEGREES
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WHAT IS THE SUM OF ALL THE ANGLES OF A PENTAGON?
• 540 DEGREES.
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WHAT IS THE SUM OF INTERIOR AND EXTERIOR ANGLE?
• 180 DEGREES.
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What is the measure of an exterior angle in a polygon (if all the
angles are equal)?
• 360 / number of sides.
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If a polygon has 12 sides, what will be its angles, if each angle is
equal?
• Steps:
1. Each exterior angle = 360/12 = 30
2. Interior angle : 180 – exterior angle
3. = 180 -30 = 150
4. Thus each angle is of 150 degrees. Answer.
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What is acute angle?
• When an angle is less than 90 degrees, it is called acute angle.
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When there are two angle the sum of which is 90 degrees, what
do we call them?
• Complement angles.• EXAMPLE: • A + B =90 DEGREES
• COMPLEMENT ANGLES
A
B
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When there are two angle the sum of which is 180 degrees, what
do we call them?
supplement angles • Supplement angles
AB
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What is supplement of 145 degree angle?
• 180 – 145 = 35 degree angle.
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What is complement of 65 degree angle?
• 90- 65 degrees = 25 degree angle.
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What is a chord?
• Any line passing through a circle is called a chord.
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In a circle of radius 10 cm, a chord is drawn 6 cm from the centre. If a chord half the length of the original chord were drawn, its distance in
centimetres from the centre’ wouldbe
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Solution…
• 10^2 – 6^2 = 100 – 36• =64 • Square root of 64 is 8.• 10^2 – 4^2 = 100-16• =84• Squre root of 84• =9.16• Thus this chord is 9.16
CM away from centre. Answer.
R=10
610
88
410
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The sides of a quadrilateral, are extended to make the angles as
shown below; what is X?
• The sum of all the exterior angles is 360 degrees.
• =75+115+90+X = 360• 280 + X = 360• X = 360-280 = 80
answer.
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If the angles of a triangle are in the ratio 5 : 3 : 2, then the
triangle could be
• Sum of all the angles is 180
• Thus one angle is 5 / (5+3+2) *180 = 90
• Second angle is : 3/(5+3+2) * 180 = 54
• 3rd angle is : 2 / (5+3+2) *180 = 36
• Thus this is a right angle triangle.
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If two parallel lines are cut by two distinct transversals, then the
quadrilateral formed by these four lines will
always be a..
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Solution ….
• In any case it will form a quadrilateral. It shape may be similar to that of a trapezium.
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A photograph measures 10 cm by 6 cm. It is to be enlarged so that the longer dimension becomes 15
cm. The length of the enlarged shorter dimension will be
• When we enlarge the photo, we increase length and breadth both in same proportion (otherwise the photo quality will be affected).
• Thus breadth will be increased by 15/10 *6 = 9 answer.
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Any cyclic parallelogram having unequal adjacent sides is
necessarily a …
• Options: • Rhombus• Square• Rectangle
• As we can see it, it is a rectangle.
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What is the distance between two points A (4,5) and B(7,9)?
• Here in A , 4 is X1 and 5 is Y1• In B 7 is X2 and 9 is Y2.• The formula for calculating the distance : • Sqrt[( X2 - X1)^2 +(Y2-Y1)^2]• =sqrt[ (7-4)^2 + (9-5)^2]• =sqrt[ 9 + 16]• =sqrt [25] = 5 • Thus distance between the two points is 5.
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What is the distance between two points A (-3,-2) and B(3,-5)?
• Here in A , -3 is X1 and -2 is Y1• In B 3 is X2 and -5 is Y2.• The formula for calculating the distance : • Sqrt[( X2 - X1)^2 +(Y2-Y1)^2]• =sqrt[ (3-(-3))^2 + (-5-(-2))^2]• =sqrt[ 36 + 9]• =sqrt [45] = 6.5 (approx.) • Thus distance between the two points is 6.5.
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Find angle A if angle B is 30 degree?
• As we can see that the chords making angle A and B have same origins & direction. In such cases the measures of the two angles are always equal – they may be on any point on the circumference. Thus angle B = 30 degree.
A
B
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What is the slope of the line passing through A (3,5) and B
(7,9)?• Here in A we have 3 as X1 and 5 as Y1
• In point B we have 7 as X 2 and 9 as Y2.
• The formula for slope calculation is :
• ( (Y2 – Y1) / (X 2 – X1)
• = (9-5) / (7-3)
• =4/4
• =1 answer.
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If there is a pentagon, how many diagonals can it have?
• As you can see that from each point, you can make two diagonals in pentagon.
• The formula for calculating the number of diagonals is : (n X (n-1) /2) - n
• N = number of sides • =(5 *4) / 2 - 5• =10 -5 = 5
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If there is a hexagon, how many diagonals can it have?
• As we can see hexagon has 6 angles.
• The formula for calculating the number of diagonals is : (n X (n-1) /2) - n
• N = number of sides • =(6 *5) / 2 - 6• =15 -6 = 9 ans.
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What will be one angle of a regular hexagon?
• Divide 360 by 6 (because there are 6 lines).
• Thus we get 60. this is the measurement of one external angle.
• Thus internal angle is : 180 – 60 = 120 degree.
• Thus we can take any internal angle, it will be 120 degree and sum of all the angles will be 120 * 6 = 720 answer.
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ABOUT AFTERSCHO☺OL
Afterschoool conducts three year integrated PGPSE (after class 12th along with IAS / CA / CS) and 18 month PGPSE (Post Graduate Programme in Social Entrepreneurship) along with preparation for CS / CFP / CFA /CMA / FRM. This course is also available online also. It also conducts workshops on social entrepreneurship in schools and colleges all over India – start social entrepreneurship club in your institution today with the help from afterschoool and help us in developing society.
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Why such a programme?
• To promote people to take up entrepreneurship and help develop the society
• To enable people to take up franchising and other such options to start a business / social development project
• To enable people to take up social development as their mission
• To enable people to promote spirituality and positive thinking in the world
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Who are our supporters?
• Afterschoolians, our past beneficiaries, entrepreneurs and social entrepreneurs are supporting us.
• You can also support us – not necessarily by money – but by being promotor of our concept and our ideas.
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About AFTERSCHO☺OL PGPSE – the best programme for developing great
entrepreneurs• Most flexible, adaptive but rigorous programme• Available in distance learning mode• Case study focused- latest cases • Industry oriented practical curriculum• Designed to make you entrepreneurs – not just
an employee• Option to take up part time job – so earn while
you learn • The only absolutely free course on internet
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Workshops from AFTERSCHO☺OL
• IIF, Delhi• CIPS, Jaipur• ICSI Hyderabad Branch• Gyan Vihar, Jaipur• Apex Institute of Management, Jaipur• Aravali Institute of Management, Jodhpur• Xavier Institute of Management, Bhubaneshwar • Pacific Institute, Udaipur• Engineering College, Hyderabad
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Flexible Specialisations:
• Spiritualising business and society• Rural development and transformation• HRD and Education, Social Development• NGO and voluntary work• Investment analysis,microfinance and inclusion • Retail sector, BPO, KPO• Accounting & Information system (with CA / CS /CMA)• Hospital management and Health care• Hospitality sector and culture and heritage• Other sectors of high growth, high technology and social
relevance
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Salient features:• The only programme of its kind (in the whole world)• No publicity and low profile course• For those who want to achieve success in life – not just a
degree• Flexible – you may stay for a month and continue the rest of
the education by distance mode. / you may attend weekend classes
• Scholarships for those from poor economic background• Latest and constantly changing curriculum – keeping pace
with the time• Placement for those who are interested• Admissions open throughout the year • Latest and most advanced technologies, books and study
material
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Components • Pedagogy curriculum and approach based on IIM Ahmedabad and ISB
Hyderabad (the founder is alumnus from IIMA & ISB Hyderabad)• Meditation, spiritualisation, and self development • EsGotitial softwares for business• Business plan, Research projects• Participation in conferences / seminars• Workshops on leadership, team building etc. • Written submissions of research projects/articles / papers• Interview of entrepreneurs, writing biographies of entrepreneurs• Editing of journals / newsletters• Consultancy / research projects • Assignments, communication skill workshops• Participation in conferences and seminars• Group discussions, mock interviews, self development diaryng • Mind Power Training & writing workshop (by Dr. T.K.Jain)
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Pedagogy
• Case analysis,• Articles from Harvard Business Review • Quiz, seminars, workshops, games, • Visits to entrepreneurs and industrial visits• PreGotitations, Latest audio-visuals• Group discussions and group projects• Periodic self assessment• Mentoring and counselling• Study exchange programme (with institutions out of
India)• Rural development / Social welfare projects
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Branches
• AFTERSCHO☺OL will shortly open its branches in important cities in India including Delhi, Kota, Mumbai, Gurgaon and other important cities. Afterschooolians will be responsible for managing and developing these branches – and for promoting social entrepreneurs.
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Case Studies
• We want to write case studies on social entrepreneurs, first generation entrepreneurs, ethical entrepreneurs. Please help us in this process. Help us to be in touch with entrepreneurs, so that we may develop entrepreneurs.
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Basic values at AFTERSCHO☺OL
• Share to learn more• Interact to develop yourself• Fear is your worst enemy• Make mistakes to learn • Study & discuss in a group• Criticism is the healthy route to mutual support
and help • Ask fundamental questions : why, when, how &
where?• Embrace change – and compete with yourself
only
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www.afterschoool.tk social entrepreneurship for better
society