1. EXAMPLE 1 Represent figures using matrices Write a matrix to represent the point or polygon. a. Point A b. Quadrilateral ABCD

2. EXAMPLE 1 Represent figures using matrices SOLUTION a. Point matrix for A b. Polygon matrix for ABCD x-coordinate y-coordinate –4 0 x-coordinates y-coordinates –4 –1 4 3 0 2 1 –1 A B C D

3. GUIDED PRACTICE for Example 1 1. Write a matrix to represent ∆ABC with vertices A (3, 5), B (6, 7) and C (7, 3). 3 6 7 5 7 3 A B C SOLUTION 2. How many rows and columns are in a matrix for a hexagon? SOLUTION 2 rows, 6 columns