Question

X
d) In the given figure, if Za = Zb, prove that
Zx = Zy.
b,
y У​

Answer 1

angle a = angle b. —i

a+x =180°. -linear pair —ii

b+y=180°. -linear pair. —iii

from ii and iii

a+x = b+y

b+x = b+y

x=b+y-b

x=y

hence proved...