Math, asked by reetikanegi96, 8 months ago

find the measure of the Angle ABC in each of the Following figures using property of the given figure

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Answers

Answered by rakhithakur

2

Answer:

sum of all angle of Pentagon = 540°

so angle b = 540- 420= 120

Answered by ishwarsinghdhaliwal

1

It is a pentagon.

The sum of interior angles of a pentagon=540°

∴ ∠A+∠B+∠C+∠D+∠E=540°

100°+∠B+80°+110°+130°=540°

∠B+420°=540°

∠B=540°-420°

∠B=120°

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