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Q: What do you call an angle that measures exactly 90 degrees?

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A 90 degrees angle is a right angle

Angles on a straight line add that up to 180 degrees are called supplementary angles

straight angle.

An acute angle

Obtuse angle

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An angle that is exactly 180 degrees is called a straight angle.

An angle that measures more than 90 degrees but less than 180 degrees is called an "obtuse" angle. Note Angles less than 90 degrees are called "acute" angles. An angle that is exactly 90 degrees is called a "right" angle. Angles that are more than 90 degrees but less than 180 degrees are call "obtuse" angles. An angle that is exactly 180 degrees is called a "straight line". Angles that are more than 180 degrees and less than 360 degrees are called "reflex" angles.

An angle that measures less than 90 degrees is an acuteangle.Note:Angles less than 90 degrees are called "acute" angles.An angle that is exactly 90 degrees is called a "right" angle.Angles that are more than 90 degrees but less than 180 degrees are call "obtuse" angles.An angle that is exactly 180 degrees is called a "straight line".Angles that are more than 180 degrees and less than 360 degrees are called "reflex" angles.is called an acute angle. An obtuse angle measure in degrees is more than 90.

A 90 degrees angle is a right angle

Acute angle is less than 90 degrees. Right angle is exactly 90 degrees. Obtuse angle is greater than 90 degrees, but less than 180 degrees. A straight angle is 180 degrees. We often call an angle that is greater than 180 degrees a reflex angle.

Angles on a straight line add that up to 180 degrees are called supplementary angles

straight angle.

An acute angle

Obtuse angle

A bigger than 180 degrees angle

an obtuse angle

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