Find the value of x and y that make these triangles congruent by HL.

Question

asked Nov 1, 2018 62.7k views

2 Answers

Petronila · Answer 1 · 2018-11-06T06:01:30+0000

Answer: the correct option is (A) x = y = 2.

Step-by-step explanation: We are given to find the values of x and y that makes the triangles in the figure congruent by HL.

From the figure, we note that

triangles ABC and AED are right-angled triangles with hypotenuse AC, AD and one congruent side BC, ED.

Also, AC = 2x + 3, AD = 3y+1, BC = x and ED = y.

Since the triangles are congruent by HL postulate, so we must have

$x=y~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~(i)\\\\2x+3=3y+1~~~~~~~~~~~~~~~~~~~~(ii)$

Substituting the value of x from equation (i) in equation (ii), we get

$2x+3=3x+1\\\\\Rightarrow 3x-2x=3-1\\\\\Rightarrow x=2.$

So, from equation (i), we arrive at

x = y = 2.

Thus, the correct option is (A).