Polygons 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 septuplets
Octagon eight sides STOP
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.
Can you classify these polygons? Regular Polygons
A regular polygon has all sides and all angles congruent. A
Which is a regular polygon? B Triangles
Triangles can be classified by their sides or by their angles.
Triangles Classifying triangles by the angles. Acute Triangle All angles are acute.
Right Triangle Contains one right angle. Obtuse Triangle
Contains one obtuse angle. 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
QUADRILATERALS SQUARES QUADRILATERALS
SQUARES RECTANGLES QUADRILATERALS SQUARES
RECTANGLES PARALLELOGRAMS RHOMBUS
RHOMBUS TRAPEZOIDS WHAT ARE
REGULAR QUADRILATERALS CALLED? Squares