Quadrilaterals

Quadrilaterals

1. Parallelograms

   • Opposite sides are congruent
   • Opposite angles are congruent
   • Opposite sides are parallel
   • Consecutive angles are supplementary
   • Diagonals bisect each other
   • A diagonal creates two congruent triangles
   • Rhombus
     • Sides are congruent
     • Angles are congruent
     • Diagonals form a right angle
     • Diagonals bisect each other
     • Adjacent sides are supplementary
   • Rectangle
     • All angles are right angles
     • Diagonals bisect each other
     • Diagonals create two congruent triangles
     • Consecutive angles are supplementary
     • Square
       • All sides are congruent
       • Diagonals are congruent

2. 4 sides

3. Trapezoid

   • Isc. Trapezoid
     • Consecutive angles = 180*
     • Diagonals are congruent
     • Legs are congruent
     • Base angles are congruent
   • Bases are parallel

4. Kite

   • Intersection of diagonals create 4 right angles
   • 1 set of congruent opposite angles
   • 2 sets of consecutive sides are congruent

5. Interior angles = 360

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