Question

.Prove that angle in a semicircle is a right angle.

Answer 1

Answer:

use protractor.....

Step-by-step explanation:

.............,........

Answer 2

Answer:

the angle in a semicircle is right angle.

Step-by-step explanation:

Now POQ is a straight line passing through center O.

∴ Angle subtended by arc PQ at O is

∠POQ=180°

The angle subtended by an arc at the center is double the angle subtended by it any point on the remaining part of the circle.

∴∠POQ=2∠PAQ

2

∠POQ

=∠PAQ

2

180

=∠PAQ

∠PAQ=90

Hence proved.

HOPE IT HELPS YOU