Math, asked by Anonymous, 1 year ago

find the unknown angles

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Answered by Rouvinsh

2

x = 70 and Y = 30 is right

Anonymous: how

Anonymous: please give full solution

Rouvinsh: it's just common sence.

Anonymous: how

Anonymous: x+80+70=180 x=180-150=30

Answered by Anonymous

4

In quadrilateral ABCD
angle B + angle 70= 180
therefore angle B = 180-70= 110
therefore angle D = 80 (SUM OF OPPOSITE ANGLE OF CYCLIC QUA. IS 180)
AND, angle C = 100 (SUM OF OPPOSITE ANGLE OF CYCLIC QUA. IS 180)
BUT, angle 70+ Y=angle C (EXTERIOR OPPOSITE ANGLE)
THEREFORE, Y= 100-70= 30..

HOPE IT HELP U.

Anonymous: plz mark as brilliant

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