wiz-icon
MyQuestionIcon
MyQuestionIcon
5
You visited us 5 times! Enjoying our articles? Unlock Full Access!
Question

The sides of certain triangles are given below. Determine which of them are right triangles.
(i) a = 7 cm, b = 24 cm and c = 25 cm
(ii) a = 9 cm, b = 16 cm and c = 18 cm

Open in App
Solution

(i) We know that in a right-angled triangle, the square of the largest side is equal to the sum of the squares of the smaller sides. Here, the larger side is c, which is 25 cm.c2=625We have:a2+b2=72+242=49+576=625=c2Thus, the given triangle is a right triangle.

(ii) We know that in a right-angled triangle, the square of the largest side is equal to the sum of the squares of the smaller sides. Here, the larger side is c, which is 18 cm.c2=324We have: a2+b2=92+162=81+256=337c2Thus, the given triangle is not a right triangle.

flag
Suggest Corrections
thumbs-up
1
Join BYJU'S Learning Program
similar_icon
Related Videos
thumbnail
lock
Triangle Properties
MATHEMATICS
Watch in App
Join BYJU'S Learning Program
CrossIcon