Right Triangles and the Pythagorean

A piece of paper that Brittany has is 11 inches tall and 8 inches wide. She draws a straight line diagonally across the paper. How long is the line she drew?

• 7.5 in

• 12.4 in

• 13.6 in 

• 14.3 in

Do these 3 side lengths form a right triangle?

13, 80, and 81?

• yes

• no

Find the distance.

• 9.7

• 10.7

• 11.7

• 12.7

The Pythagorean Theorem is _________

• a + b = c

• a² + b² = c²

• a² + b² + c²

• A = LW

To which shape(s) does the Pythagorean theorem apply?

• All triangles

• Right triangles only

• Some right triangles and some isosceles triangles 

• Right triangles and circles.

The longest side of a right triangle is called the...

• leg A

• leg B

• hypotenuse

• right angle

The longest side of a right triangle is DIRECTLY ACROSS from the...

• right angle.

• acute angle.

• obtuse angle.

When do we use the Pythagorean Theorem?

• To find a missing angle in a right triangle

• To find the missing length of a right triangle

• To find the area of a right triangle

• To find the slope of a right triangle

On your own paper, write an equation using the Pythagorean Theorem and solve for x.

• x = 15

• x = 7.9

• x = 21

• x = 225

In the given triangle, which side is the hypotenuse?

• 13

• 23

• x

• not enough information