quadrilateral is a parallelogram. If angleA (4x- 13) angle D (5x+22) then find measures of angle B and C
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Answer:
A+D=180[sum of adjacent sides of parallelogram are supplementary]
4x-13+5x+22=180
9x+9=180
9(x+1)=180
x+1=180/9
x+1=20
x=19
B=D
Therefore,D=5×19+22
=95+22
=117=B
Similarly,C=A=4×19-13=76-13=63
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