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Classifying Polygons. Triangles. Triangles are classified by their angle measures or by the number of congruent sides Acute, Obtuse and Right Equilateral, Isosceles, and Scalene. Based on Angles. 3 Acute Angles. O btuse. ACUTE. 1 Obtuse Angle. Right 1 Right Angle.
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Triangles • Triangles are classified by their angle measures or by the number of congruent sides • Acute, Obtuse and Right • Equilateral, Isosceles, and Scalene
Based on Angles 3 Acute Angles Obtuse ACUTE 1 Obtuse Angle Right 1 Right Angle
Based on Sides Equilateral Isosceles Scalene
Quadrilaterals Quadrilateral Four Sided Parallelogram Both pairs of opposite sides parallel Trapezoid Exactly one pair of parallel lines Rhombus Four congruent sides Rectangle Four right angles
Contains the 4 right angles from the rectangle and four congruent sides of a rhombus