Question

in a triangle XYZ if YZ||DE then corollary 1 is​

Answer 1

$\sf\mathbb\color{bl}\underline{\colorbox{blue}{Answer}}$

Since, XY=YZ

i. e., ΔXYZ is an isosceles triangle

Also, we know that the angles opposite to equal sides of an isosceles triangle are equal

Thus, if XY=YZ, then ∠Z=∠X.

Answer 2

Answer:

Since, XY=YZ

i. e., ΔXYZ is an isosceles triangle

Also, we know that the angles opposite to equal sides of an isosceles triangle are equal

Thus, if XY=YZ, then ∠Z=∠X.