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7-6 Polygons. Classifying Polygons. You name polygons by the number of sides. REGULAR POLYGON – ALL SIDES ARE CONGRUENT AND ALL ANGLES ARE CONGRUENT. Classifying Polygons. You name polygons by the number of sides. # of sides = 5 Name – Pentagon. # of sides = 3 Name – Triangle.
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Classifying Polygons • You name polygons by the number of sides. • REGULAR POLYGON – ALL SIDES ARE CONGRUENT AND ALL ANGLES ARE CONGRUENT.
Classifying Polygons • You name polygons by the number of sides. # of sides = 5 Name – Pentagon # of sides = 3 Name – Triangle # of sides = 4 Name – Quadrilateral
Classifying Polygons # of sides = 6 Name – Hexagon # of sides = 8 Name – Octagon # of sides = 10 Name – Decagon http://mathforum.org/dr.math/faq/faq.polygon.names.html
Special Quadrilaterals • 2 lines are parallel in they lie in the same plane and DO NOT intersect Trapezoid – has exactly one pair of parallel lines. Parallelogram – both pairs of opposite sides parallel
Special Quadrilaterals Rhombus – is a parallelogram with four congruent sides. Rectangle – is a parallelogram with four right angles Square – is a parallelogram with four right angles and four congruent sides.