Question

In the adjoining figure, ABCD is a parallelogram in which A=75°. Find
the measure of B, C and D.​

Answer 1

Answer:

sum of adjacent angles of a parallelogram is 180°

therefore, angle a + angle b = 180°

Step-by-step explanation:

Let angle b be X

=>75°+X =180°

=>X=180°-75°

=>X=105°

now angle b is 105°

angle b =angle c=105°[opposite angles of a parallelogram are equal]

angle a=angle d =75°[opposite angles of a parallelogram are equal]

therefore the angles are 105°,75°,105°,75°