Question

ABCD is a parallelogram in which angle A=4x-15 and angle B = 5x-3 the measure of a and b​

Answer 1

Answer:

we know that a°=1

so angleA and angleB values are same it is equal to 1

in a parallelogram adjacent angles sum should be 180

but angleA and B sum is not 180°

so ABCD is not a parallel