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Question

Draw an angle of 80° with the help of a protractor and bisect it. Measure each part of the bisected angle.

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Solution


Steps of construction
1. Draw AOB = 80° using protractor.
2. With O as centre and a convenient radius, draw an arc cutting AO at N and OB at M.
3. With N as centre and a convenient radius, draw an arc.
4. Similarly, with M as centre and same radius, cut the previous drawn arc and name it as point C.
5. Join OC.
OC is the required angle bisector.
On measuring we get
AOC = BOC = 40°

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