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Kryger [21]
3 years ago
5

How to find x in a triangle with an exterior angle?

Mathematics
1 answer:
Klio2033 [76]3 years ago
6 0
-say in the situation "C" was "X";  angle ∠C and ∠D are supplementary angles so ∠D-180=∠C
-all triangle, angles sums =180° so ∠A+∠B+∠C=180
-if the triangle were to be a right triangle you could use 30,60,90 or 45,45,90 but you need to know the measure of one of 2 of the angles

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