Define right triangle?

Question

Define right triangle?

Answer 1

A right triangle has 180 degrees and has a 90 degree angle

Answer 2

ANY triangle with a 90 degree angle

Answer 3

the above three answers are all good but they all left out the fact that though one of the angles must be 90 degrees, the other two angles will inevitably 45 degrees each...

to get the lengths of the sides one must use the equation a(squared)+b(squared)=c(squared)

Answer 4

A polygon with three sides where the measure of one of it's angles is 90 degrees.

Answer 5

A right triangle (or right-angled triangle, formerly called a rectangled triangle) has one 90° internal angle (a right angle). The side opposite to the right angle is the hypotenuse; it is the longest side in the right triangle. The other two sides are the legs or catheti (singular: cathetus) of the triangle.