In the figure, if $$ y 60 $$ and AB = BC, which of the following must be true?
I. $$ \alpha +y180\degree $$
II. $$ yz $$
III. $$ \alpha=y+z $$

Question

In the figure, if $$ y >60 $$ and AB = BC, which of the following must be true?
I. $$ \alpha  +y>180\degree $$
II.  $$ y>z $$
III. $$  \alpha=y+z $$

Uniteasy Admin · Accepted Answer

$$ \because y>60\degree  $$

$$ 	herefore   x= z <60\degree  $$ , II is the choice.

$$ \because \alpha  = x+y $$
and 
$$ x=z $$
$$ 	herefore  \alpha  = y+z $$ , III is the choice

Multiple Choice Question (MCQ)

Answer