Question

15. Construct 75º with the help of scale and compass.​

Answer 1

Answer:

(i) Take a ray OA.

(ii) With O as centre and any convenient radius, draw an arc cutting OA at C.

(iii) With C as centre and the same radius, draw an cutting the first arc at M.

(iv) With M as centre and the same radius, cut off an arc cutting again the first arc at L.

(v) With L and M as centre and radius of more than half of LM, draw two arcs cutting each other at B, join OB which is making 90°.

(vi) Now with N and M as centres again draw two arcs cutting each other at P.

(vii) Join OP.

Then, ∠POA = 75°.

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Answer 2

Answer:

Step-by-step explanation:

Draw a line AB and mark a point O on it.  Draw a ray OP such that ∠AOP = 90° . Now draw another ray OQ such that ∠AOQ = 60° . Draw the bisector of ∠POQ = 30°. Mark the bisector as OR.  Hence ∠AOR =75°