Question

3. If one angle of a triangle is equal to the sum
of other two show that the triangle is a
right triangle
is​

Answer 1

Answer:

true

Step-by-step explanation:

It is a right angle triangle

Answer 2

Step-by-step explanation:

let the 2 angles be = x

now the 3rd angle is sum of the 2 so= x+x=2x

now as the sum of all angles of a triangle is 180

so, x+x+2x=180

4x=180

x=180/4

x=45

now the 2 equal angle is = 45

And 3rd angle is=2x=2×45=90

hence proved that the triangle formed is right angle

hope it may help you