Classifying Triangles

​Classifying Triangles by Sides

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Deven Reese ​

​Today's Objectives

Some text here about the topic of discussion

​How can you identify triangles based on their properties?

​Essential Question

I can identify triangles based on their properties!​

​Standard: 5G4

Draw

Draw the different types of triangles you think there are

​Classifying Triangles By Their Sides | Math with Mr. J - YouTube

​This video will give us a slight introduction to triangles

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​A little introdution

​Some text here about the topic of discussion.

​Equilateral Triangles

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​Isosceles Triangles

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​A triangle with two congruent angles

​Scalene Triangles

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​A triangle with no congruent sides

Multiple Choice

Which one of these pictures is an isosceles triangle?

Multiple Choice

Which one of these triangles is an isosceles triangle?

Fill in the Blanks

An equilateral triangle has

congruent sides.

​Classifying Triangles by Angles

​Right Triangles

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• ​A triangle that has one right angle

• One angle must measure 90 degrees​

​Obtuse Triangles

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• ​A triangle that has one obtuse angle

• An obtuse angle is an angle that measures greater than 90 degrees​

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• A triangle that has 3 acute angles

• All 3 angles measure less than 90 degrees

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​Acute Triangles

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Draw

Draw a right triangle

Draw

Draw an obtuse triangle

Poll

How do you feel about classifying triangles?

• I got it !!

• I almost got it.

• I need a little help.