Geometry

Geometry

The art and logic of shapes

Polygons

• Poly - multiples

• Gons - sides, measurements

• Images with multiple sides, measurements

• Each image is a closed figure - there are no open sides

Types of polygons

• Regular - have "symnetrical" (same measure) sides and angles

• Irregular - have different sides and angles of different measure

• Polygon Names based on number of sideas and/or angles

Regular Polygons

• Most common polygons of 3 sides are called

• Triangles 

• Triangles are named based on

• length of Sides

• measure of Angles

Triangles

• Triangle Names based on sides:

• Scalene - unequal sides of triangle

• Isosceles - 2 sides of triangle are equal

• Equilateral - Equi = equal; Lateral - sides therefore they are triangles with equal meaure of 3 sides

Triangles named based on angles

• Right angled triangle - one angle is of 90 deg

• Acute Angled triangle - less than 90 deg

• Obtuse Angled triangle - one angle is > 90deg

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