Download Presentation
## Polygons

- - - - - - - - - - - - - - - - - - - - - - - - - - - E N D - - - - - - - - - - - - - - - - - - - - - - - - - - -

**Polygons**• Simple, • Closed figure • Made up of line segments**Types of Polygons**Triangles three sides Quadrilaterals four sides**Pentagon**five sides**Pentagon**five sides Hexagon six sides Heptagon seven sides**Octagon**eight sides**Octagon**eight sides Nonagon nine sides Decagon ten sides**Review**A polygon is a simple, closed, figure made up of line segments. A polygon is classified by the number of sides it has.**Regular Polygons**• A regular polygon has all sides and all angles congruent. B A Which is a regular polygon?**Triangles**• Triangles can be classified by their sides or by their angles.**Triangles**Classifying triangles by the angles….**Classify Triangles by their angles**• Acute • All angles are acute • Right • Contains one right angle • Obtuse • Contains one obtuse angle**TRIANGLES**Classifying triangles by their sides…**TRIANGLES**SCALENE**TRIANGLES**SCALENE ISOSCELES**TRIANGLES**SCALENE ISOSCELES EQUILATERAL**Classify triangles by its sides**• Scalene • No sides congruent • Isosceles • Two sides congruent • Equilateral • All sides congruent**WHAT IS A**REGULAR TRIANGLE CALLED?**QUADRILATERALS**SQUARES**QUADRILATERALS**SQUARES RECTANGLES**QUADRILATERALS**SQUARES RECTANGLES PARALLELOGRAMS**RHOMBUS**TRAPEZOIDS**WHAT ARE**REGULAR QUADRILATER- ALS CALLED?