LAST ONE
A triangle has sides 8 centimeters, 10 centimeters, and 15 centimeters. Is the triangle a right triangle?

Question

richgall____ · Answer

DONT Two sides have to be equal

retireed · Answer

No, because 3 cm, 4 cm and 5 cm is a right triangle

richgall____ · Answer

so is this one a right triangle?

retireed · Answer

Use this equation the Pythagorean theorem: 

$$a ^{2} + b ^{2} = c ^{2}$$

to prove or disprove if the triangle is a right triangle.

richgall____ · Answer

so I do i plug in all 3 numbers  ?

richgall____ · Answer

@pooja195

retireed · Answer

In a right triangle, the longest side is the hypotenuse which is the angle opposite the right angle.  

So plug the shorted two sides into the a squared and b squared side and see if they equal the longer side squared.

As in the 3, 4 and side triangle

    3^2  + 4^2  = 5^2

    9 + 16 = 25    is a right triangle

richgall____ · Answer

ok

richgall____ · Answer

8^2=64
10^2=100
15^=225