1. Quadrilaterals
Sec 12 – 1D pg

2. Quadrilaterals Quadrilateral has four sides and four angles.
The sum of the measures of the angles of a quadrilateral is 360.
97
83 x A C H J
97 + 83 + 97 + x = 360
277 + x = 360
-277 = -277
x = 83

3. Quadrilaterals - Parallelograms
Opposite sides are congruent
Opposite sides are parallel
Opposite angles are congruent

4. Quadrilateral - Rectangle
Opposite sides congruent
Opposite sides parallel
All angles are right angles

5. Quadrilateral - Square
All sides congruent
Opposite sides parallel
All angles are right angles

6. Quadrilateral - Rhombus
All sides congruent
Opposite sides parallel
Opposite angles congruent

7. Quadrilateral - Trapezoid
Exactly one pair of opposite sides are parallel.