Question

3. Use Structure Ana drew a plan for a

rectangular piece of material that she will use

for a quilt. The vertices are (-1.2, -3.5),

(-1.2, 4.4), and (5.5, 4.4). What are the

coordinates of the fourth vertex? © MP.7

Answer 1

(5.5, -3.5)

Explanation:

As you can see in the figure, the fourth vertex is (5.5, -3.5)

If you observe carefully the vertex given, you will see that there are two vertex with same coordinates in x axis:

• (-1.2, -3.5),
• (-1.2, 4.4),

And one vertex has other coordinate in x axis, it is: (5.5, 4.4)

To form a rectangle, you need a fourth vertex that will have same coordinate in x than (5.5, 4.4) and same coordinate in y axis as (-1.2, -3.5),

Then the fourth vertex coordinate is (5.5, -3.5)