vazquezemmy8
18.05.2021 •
Mathematics
What is xt7 1/3=18 2/3
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Ответ:
Two angles are complementary if their addition is equal to 90°.
As you may know, the exterior angle is equal to the addition of both opposite interior angles, so suppose that you have a triangle with two angles of 30° and one of 120° (because the addition of the 3 interior angles must be equal to 180°)
In this case, the exterior angle that is opposite of both interior angles of 30°, is equal to their sum, so this angle has 30° + 30° = 60°
Now, this angle of 60° would be complementary with bot 30° interior angles.
So given the right triangle, an exterior angle can be complementary to some interior angles.