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jenyasd209 [6]
3 years ago
7

ABCE is a parallelogram . determine the meaSure of

Mathematics
1 answer:
Tanya [424]3 years ago
6 0

Answer:

D. 78°

Step-by-step explanation:

ABCD is a parallelogram.

Measures of the opposite angles of a parallelogram are equal.

Therefore,

3x = x + 52 \\  \\ 3x - x = 52 \\  \\ 2x = 52 \\  \\ x =  \frac{52}{2}  \\  \\ x = 26 \\  \\ m\angle B = (3x) \degree \\  \\ m\angle B = (3 \times 26) \degree \\  \\ m\angle B = 78\degree

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