Mathematics, 22.01.2021 17:50 Brittpaulina

In the following diagram (used in Exercise #5), ∠ACD is known as an exterior angle of the triangle. ∠1 and ∠2 are known as remote interior angles relative to ∠ACD. Explain why m∠ACD = m∠1+ m∠2

why does it make sense to claim that an exterior angle to a triangle must always be greater in measure than either of its two remote interior angles?

In the following diagram (used in Exercise #5), ∠ACD is known as an exterior angle of the triangle.

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In the following diagram (used in Exercise #5), ∠ACD is known as an exterior angle of the triangle....