Lesson on Two-Dimensional Figures

In this unit, we will study Polygons.

Polygons are 2-dimension figures

VIDEO MATH ANTICS

POLYGONS

Polygon

2-Dimensional Figure

A polygon is a closed figure where the sides are all line segments.

Triangles, quadrilaterals, pentagons, and hexagons are all examples of polygons. The name tells you how many sides the shape has. For example, a triangle has three sides, and a quadrilateral has four sides.

Play polygons

https://www.mathsisfun.com/geometry/polygons-interactive.html

Multiple Choice

• a square

• an oval

• a circle

• a triangle

Multiple Choice

• 1 and 10

• 3 and 9

• 6, 7, and 4

• 13

Multiple Choice

How many quadrilaterals are all together?

• 7

• 8

• 9

• 10

VIDEO MATH ANTICS

QUADRILATERALS

PLAY WITH QUADRILATERALS

https://www.mathsisfun.com/geometry/quadrilaterals-interactive.html

VOCABULARY

• Congruent = Equal

• Adjacent side = The side that is closer

PLAY WITH ANGLES

https://www.mathsisfun.com/rightangle.html

Let's work Pre-Assessment Geometry in our notebook

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Open Ended

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