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An Angle on Geometry

Page 22

CONSTRUCTING ANGLES 1 Angles can be constructed by using a protractor.

r o e t s Bo r e p ok u S

1. R Construct the following angles using this method.

ew i ev Pr

Teac he r

To make an angle of 53°, place your protractor on the line PR below so that the middle point is at the end of the line (P) and the 0° mark points to R. Carefully find 53° on your protractor using the scale that starts at “0” and mark the point at the end. Rule a line to this point.

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23°

w ww

112°

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These angles are all...................................................................... because they are less than ............................ °

o c . che e r o t r s super

135°

178°

95°

These angles are all...................................................................... because they are more than......................... ° 2. R From the point in the lines below draw a line to construct an angle of the value underneath the line. Write the value of the other angle you have made. These angles are known as ............................................. angles because they add up to ............................... °

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