# polygons

## Area of Triangles

The area of a Triangle is the number of square units it takes to exactly fill the interior of a triangle. Formula for finding the area of a triangle is: A = (b • h) ÷ 2 Example 1: Step 1: Write the formula A = (b • h) ÷ 2 Step 2: Substitute the variables with the … Read moreArea of Triangles

## Polyhedrons

Polyhedrons are 3-dimensional shapes made up of many polygons. polyhedrons have a “first” and “last” name. they get their first name from the base shape, and their last name from whether or not they are prisms or pyramids. Pyramids are polyhedrons whose faces are all triangles and meet at one vertex. Prisms are polyhedrons whose … Read morePolyhedrons

## Quadrilaterals

Types of quadrilaterals The types of quadrilaterals can be classified by relationships of their sides and angles. A general Quadrilateral has 4 sides and 4 angles. The following is a general quadrilateral. Parallelogram: A four-sided polygon with two pairs of parallel and equal sides. The following is a parallelogram. Rectangle: A rectangle is a parallelogram with … Read moreQuadrilaterals

## Polygons

Polygon Triangle Quadrilateral Pentagon Hexagon Heptagon Octagon Nonagon Decagon Sides 3 4 5 6 7 8 9 10 Angles 3 4 5 6 7 8 9 10 Vertices 3 4 5 6 7 8 9 10 Note: polygons with more than 10 sides are usually called an “n-gon”. For example a 15-gon has 15 sides. Polygon: … Read morePolygons