Pythagorean Theorem (Find Leg and Hypotenuse)

The Pythagorean Theorem applies to

• only acute triangles.

• only right triangles.

• only obtuse triangles.

• all triangles.

Which side of a right triangle is the longest?

• leg a

• leg b

• the hypotenuse (c)

• It depends. It's different in every triangle.

The Pythagorean Theorem is

The legs of a right triangle

• are the longest two sides.

• are the ones the triangle stands on.

• are opposite (across from) the right angle.

• are adjacent to (make) the right angle.

The hypotenuse in a right triangle is

• adjacent to (makes) the right angle.

• any one of the three sides, you decide!

• opposite (across from) the right angle.

• the slanty side.

Which equation will help you find the length of c?

Which equation will help you find the missing side?

Calculate the length of the hypotenuse.

• 23.1 cm

• 30.4 cm

• 41 cm

• 1681 cm

^{Find the missing side.}

• 9 units

• 41 units

• 6.4 units

• 6.2 units

solve for c

• 7 units

• 9 units

• 4 units

• 13 units