Question

If one of the angles of a parallelogram measures 75 , find the other angle

Answer 1

Answer-115

angleA+angleB=180

75+x=180

x=115

Answer 2

A=C (Opposite sides of a Parallelogram are equal)

A=C = 75°

Let the other angles be x and x

$75°+75°+x+x=360°\\150°+2x=360°\\2x=360-150\\2x=210\\x=210/2\\x=105°$

$i.e,\\A=75°\\B=105°\\C=75°\\D=105°$