Last Modified: 2011-07-14
Related Textbooks:Geometry for Enjoyment & Challenge
Def: Both pairs of opposite sides parallel
Thm: Opposite sides parallel
Thm: Opposite angles congruent
Thm: Diagonals bisect each other
Thm: Any pair of consecutive angles supplement
Def: At least one right angle
Thm: All angles are right angles
Thm: Diagonals are congruent
Def: At least two consecutive sides are congruent
Thm: All sides congruent
Thm: Diagonals bisect angles
Thm: Diagonals are perpendicular bisectors of each other
Thm: Diagonals divide into four congruent right triangles
Def: Both a rectangle and a rhombus
Thm: Diagonals form four isosceles right triangles.
Def: two disjoint pairs of consecutive sides are congruent
Thm: Diagonals perpendicular
1/2 Thm: one diagonal perpendicular bisector of the other
1/2 Thm: one diagonal bisector a pair of opposite angles
1/2 Thm: one pair of opposite angles congruent
Def: Nonparallel sides are congruent (legs)
Thm: Lower base angles congruent
Thm: Upper base angles congruent
Thm: Diagonals congruent
Thm: Any lower base angle is supplement to any upper base angle
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