Bell RingerGet out your 10.5/10.7 homework assignment and

formula sheet

Get out your notebook and prepare to take notes on Section 11.2

What do you know about the following right triangle?

Chapter 11Right Triangles in

Algebra

11.2 – The Pythagorean Theorem (Page 592)

Essential Question:

How can we prove that a triangle is a right triangle?

11.2 cont.Right Triangles:

Hypotenuse – longest side, opposite the right angle

11.2 cont.Pythagorean Theorem:

?

11.2 cont.Example 1:

Find c, the length of the hypotenuse, in the following triangle:

11.2 cont.Example 2:

In a given right triangle, the hypotenuse is 9 in and one of the legs is 6 in. Find the missing leg of the triangle.

11.2 cont.Example 3:

Find the height of the following isosceles triangle:

h

11.2 cont.Example 4:

Is a triangle with sides 12 m, 15 m, and 20 m a right triangle?

11.2 cont.

Video Clip

11.2 - ClosureHow can we prove that a triangle is a right triangle?

USE THE PYTHAGOREAN THEOREM!!

11.2 - Homework

P 595-596; 2-28 even