Question

Please answer, right answer = brainliest.

Answer 1

Answer:

no

Step-by-step explanation:

to find out whether a triangle is a right triangle we can use the pythagorean theorem

a²+b²=c²

a= one side of the triangle

b= one side of the triangle

c= the hypotenuse (or biggest side )

21^2+ 72^2= 76^2

441+ 5184= 5776

5625 = 5776  X

since the sums do not equal this means that it is not a right triangle.

i hope this helps!!