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Q: What are angles called when they measure to 90 degrees?

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Right angles measure 90 degrees. Angles less than 90 are called acute, and angles greater than 90 are called obtuse. Once you reach 180 degrees, you have formed a straight line. 360 degrees makes a circle.

It is not a requirement that any of the angles are right angles (90 degrees), to qualify as a parallelogram.

Because they add up to 90 degrees

Yes they are both the measure of angles and complementary angles add up to 90 degrees while supplementary angles add up to 180 degrees

If they are congruent, they have the same measure. If they are complementary, their sum is 90 degrees. So each one of them must be a half of 90 degrees. That is, 45 degrees each.

Related questions

Angles that measure less than 90 degrees are called acute angles. Right angles measure exactly 90 degrees and obtuse angles are greater than 90 degrees.

Two angles whose sum is 90 degrees are called complementary angles.

The question isn't clear. If the sum of the two angles is 90 degrees, then they're called "complementary angles". If each one is a 90-degree angle, then they're called "two right angles".

90 degrees and 90 degrees

Angles that are less than 90 degrees are acute angles. Angles that are 90 degrees are right angles, and angles that are greater than 90 degrees are obtuse angles.

Angles greater than 90 but less than 180 degrees are obtuse angles Angles greater than 180 but less than 360 degrees are reflex angles

Right angles measure 90 degrees. Angles less than 90 are called acute, and angles greater than 90 are called obtuse. Once you reach 180 degrees, you have formed a straight line. 360 degrees makes a circle.

complementary angles

right angles

anythin between 0 degrees and 90 degrees (called acute angles)

If you are asking what kind of angles add up to 90 degrees, the answer is complementary angles.

Complementary angles.

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