Question

Please help me!!!

A triangle has 3 angles. One of the angles is 43 degrees, another is 57 degrees, what is the size of the final angle?

Answer 1

80 degrees

Explanation:

So note that, the sum of interior angles of a triangle add up to 180.

So first add up 43 and 57. You get 100. Now subtract the result from 180.

Therefore 80 is the answer