The angle of a quadrilateral are (x-20)°and(x-20)° and the remaining angles are 60° and 90°.find the measure of two unknown angles.
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(x-20)° + (x-20)° + 60° + 90° = 360°
x - 20 + x - 20 +60 + 90 = 360
2x - 40 + 150 = 360
2x + 110 = 360
2x = 360 - 110
2x = 250
x = 125°
rest 2 angles are 105° and 105°.
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x - 20 + x - 20 +60 + 90 = 360
2x - 40 + 150 = 360
2x + 110 = 360
2x = 360 - 110
2x = 250
x = 125°
rest 2 angles are 105° and 105°.
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50 degree and 160 degree
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