Question

If one angle of a triangle is equal to the sum of other two, the triangle
is a
triangle.​

Answer 1

Right triangle or right-angled triangle

hope it helps.

Answer 2

Answer:

Right angle Triangle

Step-by-step explanation:

Let the base angles be x and y respectively. The sum of two base angles is the top angle i.e x+y

Thus x+y+x+y=180 degrees

2x+2y= 180 degrees

x+y= 90 degrees (proved)