Question

ABCD is a parallelogram in which angle ADC=75 degree and side and side AB is produced to E as shown in the figure.

Answer 1

Answer:

Here, ZC and 2D are adjacent

angles of the parallelogram

:: 2C + 2D = 180°

⇒ x = 105°

Also, y = x = 105°

[alt.int.angles]

Thus, x + y = 105° +105° = 210°