A ladder is leaning against a wall. The foot of the ladder is $6$ meters away from the wall, and the ladder reaches a height of $8$ meters on the wall. What is the length of the ladder?

Given a right triangle $a\text{'}b\text{'}c\text{'}$ with side lengths $a\text{'}$ = $5$ cm, $b\text{'}$ = $12$ cm, and $c\text{'}$ = $13$ cm, what is the perimeter of the triangle?

Given a right triangle with legs of length $5$ and $12$, what is the length of the hypotenuse?

Which of the following correctly lists the types of triangles based on their sides and angles?

In the context of a right square pyramid, what is the main difference between the $\mathrm{height}$ and the $\mathrm{slant} \mathrm{height}$ of the pyramid?

Which of the following sets of side lengths can form a right triangle according to the $\mathrm{Pythagorean} \mathrm{Theorem}$?

If $\mathrm{CD}$ is an altitude to the hypotenuse $\mathrm{AB}$ of right triangle $\mathrm{ABC}$ (with right angle at $C$), which statement is necessarily true?

A right triangle has legs of lengths $6$ units and $8$ units. What is the length of the hypotenuse? If necessary, round to the nearest tenth.

Given that $20$, $21$, and $x$ form a Pythagorean triple, what is the value of $x$?