Question

what is the measure of angle at the centre in a semicircle?
Answer if you are sure..​

Answer 1

Answer:

90 DEGREE OR RIGHT ANGLE

Step-by-step explanation:

ANY ANGLE IRRESPECTIVE OF ITS POINTS IN A SEMICIRCLE IS ALWAYS A RIGHT ANGLE 90 DEGREE

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Answer 2

The angle at center of the semicircle is 180°.

Step-by-step explanation:

We know that in a circle angle at the center is 360°.

Since semicircle is the half off the cicle,it forms a straight line at center

The angle at center of the semicircle is 180°.

The angle formed at the circumference of a semicircle is 90°.

Some other important properties of Semicircle:

Area of semicircle = $\frac{1}{2}\pi r^2$]

Circumference of Semicircle = $\pi r$