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Name, , GEOMETRY QUICK GUIDE 2: 2D SHAPES, , Date, , , , , , TRIANGLES, , QUADRILATERALS, , REGULAR POLYGONS, , , , bs, , , , >, , , , Equilateral triangle, All sides equal; interior angles 60°, , Square, All sides equal; all angles 90°, , Equilateral triangle |, 3 sides; angle 60°, , , , ,,, , , , , , , , , , Eg, , [|, , , , , , Isosceles triangle, 2 sides equal; 2 congruent angles, , Rectangle, Opposite sides equal, all angles 90°, , Square, 4 sides; angle 90°, , , , A, , ©, , , , Scalene triangle, No sides or angles equal, , Rhombus, All sides equal; 2 pairs of parallel lines;, opposite angles equal, , Regular Pentagon, 5 sides; angle 108°, , , , ~, , CO, , , , Right triangle, 1right angle, , Parallelogram, Opposite sides equal, 2 pairs of parallel lines, , Regular Hexagon, 6 sides; angle 120°, , , , L\, , OO), , , , Acute triangle, All angles acute, , Kite, Adjacent sides equal; 2 congruent angles, , Regular Octagon, 8 sides; angle 135°, , , , WA, , O, , , , Obtuse triangle, 1 obtuse angle, , , , , , Trapezoid Trapezium, 1 pair of parallel No pairs of parallel, sides sides, , , , Regular Decagon, 10 sides; angle 144°, , , , Free Math Sheets, Math Games and Math Help, , KTH-SALAMANDERS.COM