Question

EXERCISE 11.1
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1. Construct an angle of 90° at the initial point of a given ray and justify the construction.

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Answer 1

Step-by-step explanation:

step of construction.

1 draw a ray OA

2 taking O as centre and any radius draw an arc

3 now, taking B as centre and with the same radius as before, draw an arc interesting the previously drawn arc at point C

4 with C as centre and the same radius, draw an arc cutting the arc at D

5 join OP

Thus, angle AOP = 90 degree

Answer 2

Step-by-step explanation:

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