Question

In the given figure:

If AB = 5 cm , QR = 7 cm; then find the value of AC (in cm), if the perimeter of
$△ABC$ is 18 cm.

• A. 5
• B. 8
• C. 7
• D. 6

Answer 1

The correct option is C

7

Both the triangle have equal corresponding sides.
So, triangle ABC is congruent to triangle RPQ by SSS criterion.
Thus, AB = PR, BC = PQ, and AC = RQ.
Since, AC = QR and QR = 7 cm

$\therefore$ AC = 7 cm