Which equation can be used to find $x$, the length of the hypotenuse of a right triangle with legs of lengths $a$ and $b$?

Based on Pythagorean identities, which equation is true?

Which of the following sets of side lengths forms a ${\mathrm{Pythagorean\; triple}}^{ }$?

Which of the following sets of side lengths forms a $\mathrm{Pythagorean}\mathrm{triple}$?

Which type of triangle is required for the Pythagorean Theorem to apply, as shown in the figure below?

Given a triangle with side lengths $3$, $4$, and $5$, which best describes the triangle?

Classify the triangle below according to its sides and angles.

I. Equilateral

II. Isosceles

III. Scalene

IV. Acute

V. Obtuse

VI. Right

Find the missing angle $\(\theta\)$ for this right triangle.