Pythagorean Theorem

Is the triangle a right triangle?

• Yes

• No

• I have no idea

• Yes

• No

• I have no idea

• Yes, $9^2+40^2=41^2$

• No, $9^2+40^2\ne41^2$

• Help

• About 20.5 units

• About 22.2 units

• About 21.1 units

• About 9.2 units