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MAT 157 Section 10.5

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MAT 157Section 10.5

Judy Sutor

Scottsdale Community College

- Define and name polygons
- Define triangles and quadrilaterals
- Compare and contrast properties of different quadrilaterals.
- Organize Quadrilaterals with a Venn Diagram

A polygon is a closed connected shape in a plane consisting of a finite number of line segments that do not cross each other.

- Everyone make a triangle
- What kinds of triangles do you know?

- Make a quadrilateral
- What kinds of quadrilaterals do you know?

- Make a pentagon
- Make a hexagon
- Make an octagon
- Make an n-gon

- Triangle – a closed shape in a plane that consists of 3 line segments
- Right triangle
- Isosceles triangle
- Equilateral triangle
- Isosceles right triangle

- Quadrilateral – a closed shape in a plane that consists of 4 line segments
- What kinds of quadrilaterals do you know?
- Square
- Rectangle
- Rhombus
- Parallelogram
- Trapezoid

- What kinds of quadrilaterals do you know?

- All of the figures are quadrilaterals but fall into different categories based on other properties.

- Use the information below for Activity 10Y page 262.

- Venn diagrams are a convenient way to show how collections of items are related.
- Let’s think about a Venn diagram that relates the set of even numbers from 1-20, the set of multiples of 4 from 1-20, and the set of factors of 20.
- Create a Venn diagram that relates the set of whole numbers, the set of integers, the set of rational numbers, the set of irrational numbers, and the set of integers
- Activity 10Z – Venn Diagrams Relating Quadrilaterals