Answer:
X= 60°
Y= 30°
Step-by-step explanation:
In triangle ABD, we have:
AB = BD = AD
Then triangle ABD is <u>equilateral</u><u> </u><u>triangle</u><u>.</u>
Then, all its angles are equal to 60°.
=> <u>X = 60°</u>
____________________________________
ADC is right triangle at D.
So, X and Y are congruent angles (their sum is equal to 90°)
So, X + Y =90°
60° + Y = 90°
Y = 90 - 60
<u>Y= 30°</u>
<u>
</u>