Pythagorean Theorem

What is the longest side of a right-angled triangle called?

• Leg A

• Leg B

• Hypotenuse

• perpendicular sides

Who was Pythagoras?

• An ancient philosopher, mathematician, and scientist.

• Inventor of the Pythagorean Theorem

• He was the first pure mathematician

• All are correct

Where was Pythagoras born?

• He was born in Egypt

• He was born in Samos, Greece

• He was born in Italy

• None of the above

A right triangle must have...

• a 45 degree angle

• a 20 degree angle

• a 15 degree angle

• a 90 degree angle

A right triangle has legs of lengths 9 cm and 12 cm. What is the length of the hypotenuse?

• 15 cm

• 22 cm

• 25 cm

• 14 cm

State if the three sides lengths form an acute, obtuse, or right triangle: 6 cm, 14 cm, 17 cm

• acute triangle

• obtuse triangle

• right-angled triangle

• isosceles triangle

State if the three sides lengths form an acute, obtuse, or right triangle:

7 in, 11 in, 13 in

• acute triangle

• obtuse triangle

• right-angled triangle

• none of these

Does the set of numbers represent a right-angled triangle?

20, 25, 15

• Yes

• No

Find the length of the missing side.

• 17 cm

• 22 cm

• 15 cm

• 13 cm

What is the final step in solving this work for c?

a² + b² = c²

3² + 4² = c²

9 + 16 = c²

25 = c²

• Get the square of both sides

• Take the square root of both sides