TechMathI - 5.1 - Polygons

Welcome to the World of Polygons!

Polygons ,[object Object],[object Object],[object Object]

More about Polygons ,[object Object],[object Object],[object Object]

Vocabulary ,[object Object],[object Object]

Terms: Side: One of the line segments that make up a polygon. Vertex: point where two sides meet.

[object Object],[object Object]

Triangle ,[object Object],1 2 3

There are several types of triangles

[object Object],[object Object],[object Object]

Quadrilateral ,[object Object]

Square ,[object Object],[object Object]

Rectangles ,[object Object],[object Object]

Parallelogram ,[object Object]

Pentagon ,[object Object],1 2 3 4 5

Octagon ,[object Object],What does this remind you of?

[object Object],Two lines don’t close to make a shape. They make an angle. 2 1 Key Question:

Name all diagonals with an endpoint at vertex C. Name all angles adjacent to A. Name the polygon.

Name all diagonals with an endpoint at vertex B. Name all angles not adjacent to D. Name the polygon. You try!

3x 2x+1 The perimeter of the parallelogram is 42 inches. Find length of the base.

4x - 2 The perimeter of the parallelogram is 84 feet. Find length of the base. You try! 2x + 2

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