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Lesson Objective. Identify triangles by their angles. . What you already know!!!!!. You have already learned different types of angles. . Right angle . Acute angle . Concept . Right Triangle- one right angle . Concept . Obtuse Triangle- one angle greater than a right angle . Concept .

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Presentation Transcript
Lesson objective

Lesson Objective

Identify triangles by their angles.


What you already know
What you already know!!!!!

You have already learned different types of angles.

Right angle

Acute angle


Concept
Concept

Right Triangle- one right angle


Concept1
Concept

Obtuse Triangle- one angle greater than a right angle


Concept2
Concept

Acute Triangle- three angles less than a right angle


Example
Example

Right Triangle


Example1
Example

Acute Triangle


Non example
Non-Example

Right Triangle


Non example1
Non-Example

Obtuse Triangle


Importance
Importance

  • Understanding different types of triangles will help you with passing the district and state test.

  • If you want to get a job as a builder you need to know the different types of triangles that would work for different structures


Skill
Skill

Steps:

  • Look at the triangle.

  • Ask does this triangle make a right angle? (if yes then you have a right triangle, if no continue)

  • Ask is the triangle smaller or bigger than a right triangle? If smaller than you have an acute triangle, if bigger than you have an obtuse triangle.


Model
Model

Problems on the board


Practice
Practice

Obtuse Triangle


Practice1
Practice

Acute Triangle


Practice2
Practice

Right Triangle


Closure
Closure

  • What was our objective for the day?

  • Why is it important to learn about different triangles?

  • What is this triangle called?