## Which angle in semicircle is 90 degree?

The angle inscribed in a semicircle is always a right angle (90°).

## Why is the semicircle angle 90?

The theorem states that the angle subtended by an arc at the center is double the angle subtended by it on any point on the remaining part of the circle. Hence, it can be said that the angle in a semicircle is a right angle.

Is the angle in a semicircle is obtuse angle?

So an angle in a semicircle is a straight angle. Hence option (B) is correct. A straight line comprises of an angle 1800, angle is said to be a right angle if it is equal to 900 and obtuse angle are angle which are greater than 900 but are less than 1800.

Is there a right angle in a semicircle?

The angle at the circumference in a semicircle is a right angle.

### How many right angles does a semicircle have?

As the other answers have indicated, if your definition includes angles at the intersection of two curves then a semicircle certainly has two right angles.

### How many right angle does a semi circle have?

As you identify in your question, the real point of contention is the definition of angle. As the other answers have indicated, if your definition includes angles at the intersection of two curves then a semicircle certainly has two right angles.

What is the angle of a semicircle?

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

How many right angles does a semi-circle have?

#### What angle is inscribed in a semicircle?

180°
An especially interesting result of the Inscribed Angle Theorem is that an angle inscribed in a semi-circle is a right angle. In a semi-circle, the intercepted arc measures 180° and therefore any corresponding inscribed angle would measure half of it.

#### Are there 2 right angles in a semicircle?

Yes. The semi-circle can even be referred to sometimes as a ( Curvilinear) Diangle, sum of the two shown right angles is π.