Geometry - LInes and Angles, Gumdrop Activity and Around the World
Calculating angles around a point€¦ · Calculating angles around a point 1 Work out the sizes of...
Transcript of Calculating angles around a point€¦ · Calculating angles around a point 1 Work out the sizes of...
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Calculating angles around a point
1 Workoutthesizesoftheunknownangles.
a) c)
a= ° c= °
b) d)
b= ° d= °
2 Ronturnsclockwisethrough110degrees.
Hecontinuestoturnthesameway.
Hewantstoturntowherehe
wasfacingatthestart.
Howmanymoredegreesdoeshe
needtoturnthrough?
°
3 Workoutthesizeoftheunknownangles.
a) c)
w= ° y= °
b) d)
x= ° z= °
4 Workoutthesizesoftheunknownangles.
a) b)
m= ° n= °
©WhiteRoseMaths2020
60°
a
170°
205°bd
110°
?
145°
70°
240°
265°
w
x
y
z
130°m
70°
n
175°79°
129°
c
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©WhiteRoseMaths2020
5 MsHallasksherclasstodrawanangleof250degrees.
a) ExplainwhyAlexiscorrect.
b) Drawanangleof250degrees.
Comparemethodswithapartner.
6 Workoutthesizeofangley.
y = °
7 Workoutthesizesoftheunknownangles.
Givereasonstosupportyouranswers.
a)
b= °because________________
_______________________________________
b)
c= °because________________
_______________________________________
8 Acircleisdividedintotenequalsections.
Whatisthesizeoftheanglemarkedg? g= °
b
My protractor only goesup to 180 degrees.
That’s true. But I think we can still use it.
y48°
190°
65°
bb
ccc231°
g