Question

Given: In quadrilateral ABCD angle C=64°angle D=angle C- 8° ; angle A=5(a+2)° and angle B = 2(2a+7)° . Calculate angle A
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Answer 1

We know that sum of all angles of quad is 360  

So

64 +(64-8)+5 (a+2)+2 (2a+7) = 360

64 + 56 + 5a + 10 + 4a +14 = 360

64 + 56 + 9a + 24 = 360

144+ 9 a = 360

9a = 360 - 144

a = 216/ 9

a = 24 Ans

Answer 2

Answer:

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