2.1 Geometry

​Time to Exercise our Brain.

We all can all learn!!!!!!!​

​Pythagorean Theorem

​Standard: MA.8.GR.1 Develop an understanding of the Pythagorean Theorem and angle relationships

involving triangles.

​

Today we will practice finding squares and square roots and identifying the hypotenuse and legs of a right triangle.

Multiple Choice

Which angle type is pictured?

• Acute

• Right

• Obtuse

• Straight

Multiple Choice

Identify the type of triangle.

• Acute

• Right

• Obtuse

Right Triangles

These always have three sides - two legs and a hypotenuse. The two legs are always shorter than the hyptenuse and the hypotenuse is always found across from the right angle.

What are the sides of a triangle?

​

What is a side called?

What is b side called?​

What is c side called?​

a​

​b

​c

Multiple Choice

This is the longest side of a right triangle

• hypotenuse

• leg

• Pythagorean theorem

• Right triangle

Multiple Choice

The hyopotenuse of the triangle measures

• 32

• 24

• 40

• 32 and 24

Squaring a number is raising that number to the power of ^two.

This tells you that you should multiply that number by itself. For example 5² means 5x5, which is just 25.

Multiple Choice

What is 11 squared?

11²

• 132

• 144

• 121

• 22

Multiple Choice

What is 64 squared?

64²

• 4096

• 8

• 16

• 128

Taking the square root of a number is the opposite of squaring it. 

Multiple Choice

What is the square root of 100?

√100

• 10

• 200

• 50

• 1000

Multiple Choice

What is the square root of 36?

√ 36

• 4

• 6

• 18

• 1296

Multiple Choice

Round to the nearest tenth:

$$\sqrt{13}=?$$  

• 5.6

• 2.6

• 3.9

• 3.6