4) A triangle has sides of 3 inches. 4 inches and 5 inches. Is it a right triangle?
Here, sides of the triangle follow the Pythagoras theorem, so it is a "Right-Angle" triangle.
a^2 + b^2 = c^2
Hope this helps!
Follow the Pythagoras theorem :
5 inches is the longest lenght.
5² = 25
3² + 4² = 9 + 16 = 25
So 5² = 3² + 4²
That means the triangle is a right triangle.
Hope this helps !
Photon