Question

Two angles of a triangle are 50° and 40°. Prove that the triangle is right angled.​

Answer 1

Answer:

Step-by-step explanation:

The  triangle is right angle, which means one angle of the triangle is 90°.

We have also given one more angle of the triangle i.e., 40°.

Let, consider the 3rd angel be = x

Angel sum property of a triangle is =180°

=> 90° + 40° + x = 180°

=> 130° + x = 180°

=> x = 180° - 130°

=> x = 50°

Therefore, the third angle of a right angle triangle is 50°.

According to given question,

The size of the other 2 angle is = 90° + 50°

=> 140°

mark it the brianleist

Answer 2

Step-by-step explanation:

50+40+x=180

angle sum property

90+x=180

x=90

hence proved