Question

Construct an angle 150° of the initial point of a given ray. Write steps of

construction and justify.​

Answer 1

__180°

|_ 90°

/_45°

60°+90°

15°

.......use projecter

Answer 2

Take a line segment, say, AB.

Choose a point C on it.

With center C, and radius BC, draw an

arc.

With center B and radius BC, cut the previous arc at say DD. (ZDCB=60°ZDCB=60°because we just made CD=BC=BD .)

With center D, and radius BC draw an arc.

With center B and radius BC, cut this arc at, say, EE. Then EC is the bisector of ZBCD, and hence ZBCE3D30•

Then, ACE=1800-2BCE=1500

Hope it's helpful for you.

Note the Z is < this by mistake it's made Z