Question

one of the angles of a triangle is equal to the sum of the other two. what is that angel?

Answer 1

exterior angle=sum of two of its interior angle.
hope it helps you
mark as brainliest please

Answer 2

45+45=90

Which means that the sum of two angles 45 degrees is equal to 90 degrees and in total it makes a 180.

Sum of all angles in a triangle is equal to 180. and in this case this triangle is a right angled triangle..