Answer:
a. ZWY
b. 9cm
c. Aly's solution is correct
Explanation:
a. YW bisects the whole angle, thus angle XWY and angle ZWY are same
NOTE: REMEMBER TO WRITE THE LETTER ACCORDINGLY
b. the two triangles are congruent by AAS (angle-angle-side) thus the two legs of the the triangles are also congruent. when one is 9cm, the other is also 9cm.
c. Since the triangles are congruent, their sides also congruent.
7x-20=2x-5
7x-2x=-5+20
5x=15
x=3
This is same as Aly's solution