Question

4. The two triangles are congruent. Solve for x.

Then find the missing sides.
Чx-9
3x
5

Answer 1

x = 9

missing sides = 27

Explanation:

the two triangles are congruent when all the three pairs of corresponding sides are equal:

i.e.

4x - 9 = 3x

4x - 3x = 9

x = 9

thus, the missing sides are:

4x - 9 = 4(9) - 9 = 36 - 9 = 27

3x = 3(9) = 27

missing sides = 27