two right angles are __________ congruent
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two right angles are __________ congruent
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Two right angles are congruent because they have equal measures. In other words,if they are angle A and angle B : since angle A = 90°.
Answer:
Two angles are called complementary if their sum is a right angle. Book 1 Postulate 4 states that all right angles are equal, which allows Euclid to use a right angle as a unit to measure other angles with.