1. Quadrilaterals (quads)

2. identifying quads 1 more than 4 sides  not a quad 4 sides  quad
less than 4 sides  not a quad
4 sides, but some curved  not a quad

3. identifying quads 2
Quad? no
yes

4. parts of a quad 1 B A D C vertex B side AB vertex A angle B angle A
diagonal BD
side BC
diagonal AC
side AD
angle D
angle C D C
side CD
vertex D
vertex C

5. parts of a quad 2 L Q H Z Which vertex? Which diagonal?
Which side?
Which angle? H Z

6. convex and concave quads
1 diagonal outside  concave
both diagonals inside  convex

7. trapezium
1 pair of opposite sides are parallel to each other

8. parallelogram 2nd pair of opposite sides are parallel to each other
1st pair of opposite sides are parallel to each other
both pairs of opposite sides are parallel to each other

9. rectangle
all angles are equal
Are these parallelograms?

10. rhombus
all sides are equal
Are these parallelograms?

11. square all angles are equal all sides are equal
Are these parallelograms?
Rectangles?
Rhombuses?