Question

Steps for the construction of a 30° angle.

Choose the correct order.

1: Draw a ray OA.

2: With B as centre and the same radius as before, draw another arc to cut the previous arc at C.

3: Draw the bisector OE of ∠AOD.

4: Join OC and produce it to D.

5: With O as centre and any suitable radius draw an arc above OA cutting it at a point B.

• A. 1, 2, 5, 3, 4
• B. 1, 2, 5, 4, 3
• C. 1, 5, 2, 3, 4
• D. 1, 5, 2, 4, 3

Answer 1

The correct option is D

1, 5, 2, 4, 3

Steps for the construction of a 90° angle:

1: Draw a ray OA.

5: With O as centre and any suitable radius draw an arc above OA cutting it at a point B.

2: With B as centre and the same radius as before, draw another arc to cut the previous arc at C.

4: Join OC and produce it to D.

3: Draw the bisector OE of ∠AOD.

Then, ∠EOA = 30°