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Parallelogram:
- Opposite angles are equal - Consecutive angles are supplementary - Opposite sides are equal - Diagonals bisect each other |
Area = bh
Perimeter = 2b+2c |
Rhombus:
- All postulates of parallelograms (Plus:) - All sides equal - Diagonals are perpendicular bisectors of each other |
Area = bh = 1/2(d1xd2)
Perimeter = 4s |
Rectangle:
- All angles are 90o - Diagonals are equal (but not perpendicular) |
Area = bh
Perimeter = 2b+2h |
Square:
- All sides equal - All angles 90o - Diagonals bisect each other, are perpendicular, and = |
Area = bh
Perimeter = 4s |
Trapezoid:
- Bases are parallel - legs not necessarily = - Diagonals not necessarily = |
Area = 1/2*h*(b1+b2)
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Isoceles Trapezoid:
- Diagonals = - Base angles are = |
Isoceles Trapezoid:
- Diagonals = - Base angles are = |
Number of sides:
- Pentagon - Hexagon - Heptagon - Octagon |
Number of sides:
- Pentagon: 5 - Hexagon: 6 - Heptagon: 7 - Octagon: 8 |