Question

in fig 11 lines l and m intersect each other at a point. Which of the following is not always true? (a)/_a=/_b (b)/_c=/_d (c)/_a+/_d=180 degree (d)/_a+/_b=90 degree​

Answer 1

Answer:

d ) angle a + b = 90°

Step-by-step explanation:

because of given information