Question

* ANSWER PLEASE *

We have a circle with center A with an arc CB with a measure of 180°. What is the measure of angle D?

Answer 1

90 degrees

Explanation:

Answer 2

90

Explanation:

You can look at it from 2 perspectives:

1.The angle that is in front of a diameter is always 90°

OR

2. Central angle is twice any inscribed angle subtended by the same arc