Pythagorean Theorem Basics

Pythagorean Theorem Basics

By the end of the lesson, you will be able to use the Pythagorean theorem and its converse.

​Pythagorean Theorem & Converse

• ​​​Watch the video

• ​Record the examples and information on the notes page or in your notebook.

• ​Complete the "You Try" and check your work with Mrs. Jackson.

• ​Then, continue the rest of the lesson to get at least an 80%

Multiple Choice

True or False: The Pythagorean Theorem can be used to solve acute or obtuse triangles.

• True

• False

Multiple Choice

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

• leg A
• leg B
• hypotenuse
• right angle

Multiple Choice

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

• right angle.
• acute angle.
• obtuse angle.

Multiple Choice

In the given triangle, which side is the hypotenuse?

• 14

• 8

• x

• not enough information

Multiple Choice

Side c on a right triangle is ALWAYS the longest.

• True

• False

Multiple Choice

What is the opposite of squaring a number?

• divide
• multiply 
• fractions
• square root

Multiple Choice

Which set of sides would make a right triangle?

• 4,5,6
• 8,10,12
• 5,12,13
• 5,10,12

​Finding the Missing Side of a Right Triangle

• ​​​Watch the video

• ​Record the examples and information on the notes page or in your notebook.

• ​Complete the "You Try" and check your work with Mrs. Jackson.

• ​Then, continue the rest of the lesson to get at least an 80%

Multiple Choice

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

• x = 15

• x = 7.9

• x = 21

• x = 225

Multiple Choice

Level 2

Solve for the value of y

• 13

• 5

• 23

• 10

Multiple Choice

Level 3

Find the length of the missing side.

• 20 in.

• 68 in.

• 16 in.

• 80 in.

Multiple Choice

What is the final step in solving this work for c?
a² + b² = c²
3² + 4² = c²
9 + 16 = c²
25 = c²

• Divide both sides by 2
• Take the square root of both sides

Multiple Choice

Determine the length of the missing side.

• 7

• 8

• 17

• 23

Poll

How well did you understand this lesson?