Q: Why do two congruent angles that are complementary both measure 45 degrees?

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always

If 2 angles are congruent and complementary, they must each be 45 degrees.

No, not all congruent angles are 45 degrees. They only are in complementary congruent angles.

Not NecessarilyAlternate interior angles are congruent, or equal. They have the same angle measure, while complementary means they add up to 90 degrees. Therefore, the only time alternate interior angles are complementary is when they are exactly 45 degrees.

Nope. It is complementary angles that add to 90 degrees.

Related questions

always

If 2 angles are congruent and complementary, they must each be 45 degrees.

No, not all congruent angles are 45 degrees. They only are in complementary congruent angles.

Vertical angles must be congruent so if they are complementary, they must be 45 degrees to be complementary.

90 degrees

Not NecessarilyAlternate interior angles are congruent, or equal. They have the same angle measure, while complementary means they add up to 90 degrees. Therefore, the only time alternate interior angles are complementary is when they are exactly 45 degrees.

It is always true because two congruent angles that are complementary both measure 45 degrees.

Nope. It is complementary angles that add to 90 degrees.

45°

No, complementary angles aren't normally congruent.

No. If two angles are congruent they have the same measure. But that measure can be anything.

Complementary angles add up to 90 degrees. If congruent then: 45+45=90