Pythagorean Theorem Basics

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

The Pythagorean Theorem is _________

• a + b = c

• a² + b² = c²

• a² + b² + c²

• A = LW

In the given triangle, which side is the hypotenuse?

• 13

• 23

• x

• not enough information

In the given triangle, which side is the hypotenuse?

• 14

• 8

• x

• not enough information

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

• x = 15

• x = 7.9

• x = 21

• x = 225

How much is 4^2?

• -4

• 8

• 9

• 16

How much is 3² + 4^2?

• 14

• 7²

• 25

• 7⁴