Copyright@Ed2netLearning,Inc1 GEOMETRY Grade 3. copyright@Ed2netLearning,Inc2 Hello, How are you...
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Transcript of Copyright@Ed2netLearning,Inc1 GEOMETRY Grade 3. copyright@Ed2netLearning,Inc2 Hello, How are you...
copyright@Ed2netLearning,Inc 3
Solid Figures• 2-dimensional figure – A
figure that has only length and width.Example: square, rectangle, circle
• 3-dimensional figure – A figure that has length, width and height.Example: cube, cone
Circle
Cube
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2-dimensional figureSquare: 4 sides and 4 angles. All sides are
equal.
Rectangle: 4 sides and 4 angles. Opposite sides are equal.
Triangle – 3 sides and 3 angles.
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3- dimensional figures Rectangular Prism
Cylinder
Vertex
Flat Face
Straight Edge
Curved face
Curved Edge
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What is the shape of the orange Juice shown in the figure?Answer- Cylinder
Orange
Juice
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Lines and Line-segments• Line – A straight path that goes in two
directions without ends.
• Line Segments – Lines that stay the same distance apart from each other.
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Name each figure.
Answer- a) Triangleb) Rectangular Prismc) Line
A B C
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Intersecting and Parallel lines• Intersecting lines –
lines that meet or cross at a common point.
• Parallel lines – lines that stay the same distance apart from each other. They do not cross.
Intersecting Lines
Parallel lines
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Ray• A ray is a straight line.• It has one end point and goes on without
end in 1 direction.
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Angles
• An angle is formed by 2 rays with the same end point.
• Right Angle – A right angle forms a square corner.
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Polygon• Polygon is a closed
figure with straight sides.Example: hexagon, pentagon, octagon
Closed figure but not a polygon
Polygon
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Polygon• A pentagon has 5 sides and 5 angles.• A hexagon has 6 sides and 6 angles.• An octagon has 8 sides and 8 angles.
Hexagon Pentagon Octagon
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Identify and Draw each Polygona) It has 3 sides.b) It has 4 sides. All are equal.Answer – a) Triangleb) Square or Rhombus
Triangle Square
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QuadrilateralA closed figure with four
sides.Example: Rectangle, square,
Trapezium, Rhombus
Parallelogram – Quadrilateral having both pair of opposite sides parallel.
Trapezoid – Quadrilateral having only one pair of parallel sides.
Trapezoid
Parallelogram
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Nick made a pentagon using 5 toothpicks. He now wants to change pentagon to octagon. How many more toothpicks does he need?
Answer- 3
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Bob makes two different quadrilaterals with 4 equal sticks. What two quadrilaterals did he make?
Answer- square and Rhombus
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1. How many Crayons do we need to draw a) Hexagonb) Square
Answer- a) 6b) 4
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2. Identify each Quadrilateral
Answer- a) Trapezium b) Rhombus
c) parallelogram
A B C
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4. Name each figure
Answer- a) Intersecting Linesb) Linec) Ray
A B C
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6. How many sides does each figure has?a) Rhombusb) Triangle
Answer- a) 4 b) 3
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7. What kind of lines are in the alphabet X ?Answer- Intersecting Lines
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9. Name all the shapes in the figure?
Answer- Rectangle, Square, Circle, Triangle, Parallelogram
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10. Mike traced around the bottom of a box shaped like the, rectangular prism( figure shown). What shape did Mike draw?Answer- Rectangle