Is a circle a polygon? Why or why not?

It is not. A polygon is a closed shape that has straight sides, while a circle has curves.

Draw a 5-sided polygon.

Any drawing of a closed shape with exactly 5 sides.

What is one shared attribute of squares and rhombuses?

Both have all sides equal in length. Both have two sets of parallel sides.

What is one difference between squares and rhombuses?

Squares have four right angles and rhombuses do not.

Name one category of shapes that includes both squares and rhombuses.

Both belong to parallelograms, quadrilaterals, and polygons.

Say you have a category of shapes. You add another attribute to that category, such as "all 4 sides have equal length." Is the number of shapes that fall into the new category less than or greater than the number of shapes in the original category?

The number gets smaller since the new category is more specific.

Why are all squares rectangles but not all rectangles are squares?

Squares fit ALL of the attributes that define rectangles, but rectangles do not fit all of the attributes that define squares. Not all rectangles have four sides of equal length.

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Intro to Quadrilaterals and their Attributes

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What you will learn from this videoWhat you will learn

A quadrilateral is a closed shape that has 4 straight sides.
Shapes like squares, rectangles and rhombuses can share attributes that define a larger category of shapes.
Knowing how to identify quadrilaterals can help us travel, fly a kite, and even improve the community!

Discussion Questions
- Before Video
  Is a circle a polygon? Why or why not? ANSWER
  - It is not. A polygon is a closed shape that has straight sides, while a circle has curves.
  What shapes have 4 square corners (4 right angles)?ANSWER
  - Squares and rectangles.
  Draw a 5-sided polygon. ANSWER
  - Any drawing of a closed shape with exactly 5 sides.
  How many sides does a rectangle have? ANSWER
  - Four.
  What is the name for a polygon with three sides? ANSWER
  - A triangle.
- After Video
  What is one shared attribute of squares and rhombuses?ANSWER
  - Both have all sides equal in length. Both have two sets of parallel sides.
  What is one difference between squares and rhombuses?ANSWER
  - Squares have four right angles and rhombuses do not.
  Name one category of shapes that includes both squares and rhombuses.ANSWER
  - Both belong to parallelograms, quadrilaterals, and polygons.
  Say you have a category of shapes. You add another attribute to that category, such as "all 4 sides have equal length." Is the number of shapes that fall into the new category less than or greater than the number of shapes in the original category?ANSWER
  - The number gets smaller since the new category is more specific.
  Why are all squares rectangles but not all rectangles are squares?ANSWER
  - Squares fit ALL of the attributes that define rectangles, but rectangles do not fit all of the attributes that define squares. Not all rectangles have four sides of equal length.
Vocabulary
- Polygon DEFINE
- Quadrilateral DEFINE
- Rectangle DEFINE
- Square DEFINE
- Rhombus DEFINE
- Parallel lines DEFINE
- Parallelogram DEFINE
- Trapezoid DEFINE
- Kite DEFINE
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Practice Number Problems
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