3 years ago

ABCD is a parallelogram. Find the measure of ZB.

Mathematics

1 answer:

Korolek [52]3 years ago

6 0

Answer:

121°

Step-by-step explanation:

<B = 9x - 5°

<D = 10x - 19°

<B = <D ( being opposite angles of parallelogram)

9x - 5° = 10x - 19°

10x - 9x = 19° - 5°

x = 14°

Now

<B = 9x - 5°

= 9 * 14° - 5

= 121°

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