Lesson 4: Parallelograms
Let's investigate the features and area of parallelograms.
4.1: Features of a Parallelogram
Figures A, B, and C are parallelograms. Figures D, E, and F are not parallelograms.
A
D
E
B
2. opposite sides of a parallelogram?
O
F
Study the examples and non-examples. What do you notice about:
1. the number of sides that a parallelogram has?
3. opposite angles of a parallelogram?
C