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Triangles. Classified by their SIDES and by their ANGLES. Triangles Classified by their SIDES. Equilateral : All sides are congruent Isosceles : At least 2 sides are congruent Scalene : None of the sides are congruent. Triangles Classified by their ANGLES.
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Triangles Classified by their SIDES and by their ANGLES.
TrianglesClassified by their SIDES • Equilateral: All sides are congruent • Isosceles: At least 2 sides are congruent • Scalene: None of the sides are congruent
TrianglesClassified by their ANGLES • Acute: all 3 angles are acute angles • Obtuse: 1 obtuse angle (leaving 2 acute angles) • Right: 1 right angle (leaving 2 acute angles)
Quadrilaterals 4-sided figures
Parallelogram • Opposite sides are congruent • Opposite sides are parallel
Rectangle • Opposite sides are congruent • Opposite sides are parallel • 4 right angles
Square • Opposite sides are congruent • Opposite sides are parallel • 4 right angles • 4 congruent sides
Rhombus • Opposite sides are congruent • Opposite sides are parallel • 4 congruent sides
Trapezoid • One pair of parallel sides