What is a Polygon?

Mrs. Yollis' class has been learning all about geometry.   

This week, the students are learning about POLYGONS! For those who don't know, a polygon is a closed figure with straight lines.

Hey, what is Circle doing in the Polygon movie? 

In this 2008 drama, Circle tries to get a starring role in the new movie, Polygons, but is forced to accept the fact that:

A CIRCLE is NOT A POLYGON and never will be.


Don't worry, it has a happy ending!

Click here to watch the movie!


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Tell us about some polygons you see in your house?

Which shape was your favorite character?

Types of Triangles!

By the TRIO of  Kate, Gal, and Jaxon          


    

 A polygon with three sides is called a triangle. 

We learned there  are five kinds of triangles. 

  ∆     ∆     ∆     ∆    ∆

The first one is an equilateral triangle. 

It has 3 equal sides and 3 equal angles. 



 



When you rotate an equilateral triangle,  it looks the same. 

  ∆     ∆     ∆     ∆    ∆

 Secondly, is the isosceles triangle. Gal was surprised to know that her necklace had an isosceles triangle on it!

The isosceles triangle has 2 equal sides and 2 equal angles.

  ∆     ∆     ∆     ∆    ∆

 Thirdly, is the isosceles right. 

An isosceles right has 2 equal sides and  2 equal angles. 

However,  it has 1 right angle.   

  ∆     ∆     ∆     ∆    ∆

 Next, is the scalene. 

 

It has no equal sides or angles.

  

∆     ∆     ∆     ∆    ∆

 In addition, there is the scalene right. 

 

The scalene right has no equal sides, but it has 1 right angle. 

  ∆     ∆     ∆     ∆    ∆

These are the five different triangles.


Ms. Palmer, Jaxon's mom, wanted to know what kind of a triangle the trio would make. Here is the human isosceles triangle!

 

  

Also, here is the equilateral necklace Mrs. Yollis' husband made for her!

What is your favorite triangle and why?

Are there any triangles at your school or house? 

Tutorials: Identifying Quadrilaterals!

In our polygon unit we are learning about four-sided figures called

QUADRILATERALS!

Many people were confused about why some shapes have more than one name. Here are some tutorials to help you learn about quadrilaterals.

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What is a parallelogram?

Here is an interactive parallelogram.

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What is a rectangle?

Here is an interactive rectangle.

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What is a rhombus?

Here is an interactive rhombus.

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What is a square?

Here is an interactive square.

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Have you used our quadrilateral tutorials? 

Which one helped the most?
Please leave a comment by clicking the comment link right below this sentence.

The Polygon Movie!

Mrs. Yollis' class has been learning all about geometry.   Last week, they learned about  the CIRCLE!

This week, the students are learning about POLYGONS! 

(A polygon is a closed figure with straight lines.)

In this 2008 drama, Circle tries to get a starring role in the new movie, Polygons, but is forced to accept the fact that

A CIRCLE is NOT A POLYGON and never will be.

Don't worry, it has a happy ending!

Click here to watch the movie!


*     *     *     *     *

Do you have any polygons in your house?

Which shape was your favorite character?