Pythagorean Theorem and Converse

If three sides of a right triangle are 9, 40, and 41, which side is the hypotenuse?

• 9
• 40
• 41

Can side lengths 3, 4, and 5 form a right triangle?

• yes
• no

Tell whether each triangle is acute, right or obtuse

sides 9 ft, 20 ft, 14 ft

• acute

• right

• obtuse

Tell whether each triangle is acute, right or obtuse

sides 15 cm, 8 cm, 17 cm

• acute

• right

• obtuse

Tell whether each triangle is acute, right or obtuse

sides 12 in, 10 in, 8 in

• acute

• right

• obtuse

Tell whether each triangle is acute, right or obtuse

sides 80 mi, 78 mi, 5 mi

• acute

• right

• obtuse

Which equation can be used to solve for "x"?

• 15² – x² = 21²

• x² – 15² = 21²

• 15² + 21² = x²

• 21² – 15² = x²

Determine the length of the missing side.

• 7

• 8

• 17

• 23

_{^{Find the missing side}}

• 48
• 108
• 83.6
• 72

_{^{Find the missing side}}

• 9
• 41
• 6.4
• 3