Question

The angle of a semicircle is​

Answer 1

Answer:

90°

Step-by-step explanation:

The angle at the circumference in a semicircle is 90°. Angles in a triangle add up to 180°.

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Answer 2

The angle of a semicircle is 90° means Right Angle

Step-by-step explanation:

The angle of a semicircle is 90° means Right Angle

How to prove

ABC = 180°

A + B + C = 180°

40° + B + 50° = 180°

B + 90° = 180°

B = 180° - 90°

B = 90°

Hence proved

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ANGLES

ACUTE ANGLE

The angle between 0° and 90° is called as acute angle.

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RIGHT ANGLE

The angle of 90° is called as right angle.

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OBTUSE ANGLE

The angle more than 90° and less than 180° is called as obtuse angle.

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STRAIGHT ANGLE

The angle of 180° is called as straight angle.

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REFLEX ANGLE

The angle more than 180° and less than 360° is called as reflex angle.

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COMPLETE ANGLE

The angle of 360° is called as complete angle.