Question

In parallelogram ABCD, angle A = 3 times angle B.
Find all the angles of the parallelogram. In the
same parallelogram, if AB = 5x - 7 and
CD = 3x + 1; find the length of CD.​

Answer 1

Answer:

angle B= x

so angle A= 3x

as angleA=3angle B

angleA+angle B=. 180(as the sum of the interior angle of two paralle lines is 180)

x+3x=180

4x=180

x=45 so angle B =45

angle A=135

opposite sides of the parallelogram are equal

so AB=CD

5x-7=3x+1

2x=8

x=4 so CD=13

Answer 2

Answer:

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