Question

What is m<BCD
OA) 80°
OB) 90°
C) 100°
D) 110°​

Answer 1

D

Explanation:

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Answer 2

D

Explanation:

The external angle of a triangle is equal to the sum of the 2 opposite interior angles.

∠ BCD is an exterior angle of the triangle, thus

∠ BCD = 50° + 60 = 110° → D