a^2 + b^2 = c^2 c= hypotenuse a and b are the legs (sides) of the triangle
There is no formal definition: it is any side of a triangle. Often, if the triangle has a horizontal base, then it is one of the sloped sides. In a right angled triangle, it is one of sides adjacent to the right angle. In an isosceles triangle, it is one of the equal sides.
A triangle with a right angle and different lengths for sides is a right, scalene triangle.
A right angled triangle.
A ISOSCELES triangle. With all sides equal it is an EQUILATERAL triangle With one right angle it is a RIGHT ANGLED traigle/ With no sides equal it is a SCALENE triangle.
a^2 + b^2 = c^2 c= hypotenuse a and b are the legs (sides) of the triangle
A right trapezium. (A right angled triangle, sitting on one of the shorter sides, with its apex cut off by a line parallel to its base.)
If you know the length of the sides, you can use Pythagoras' Theorem to calculate the height. Use half the base for one of the shorter sides, and either of the two identical sides of the triangle for the hypothenuse. Solve for the other one of the shorter sides (the height).
An isosceles triangle. It is an isosceles triangle even if the third side is shorter.
A scalene right triangle is a triangle that has no congruent sides and and one right angle.
There is no formal definition: it is any side of a triangle. Often, if the triangle has a horizontal base, then it is one of the sloped sides. In a right angled triangle, it is one of sides adjacent to the right angle. In an isosceles triangle, it is one of the equal sides.
The hypotenuse of any right triangle is longer than either one of the other two sides of the same right triangle. But it's shorter than their sum.
A right triangle
A triangle with a right angle and different lengths for sides is a right, scalene triangle.
A right triangle has three sides and one right angle.
You cannot - unless there is some other information. For example, that the triangle is isosceles, or that one of the shorter sides is related to the other is some way. Or there is another triangle (or other shape) from which you can work out one of the sides.
A right angled triangle.