Lessons 4-7 Homework: Peck

In lesson 4, we discussed the relationships between corresponding parts and using those to identify scaled vs. not scaled copies.

we know these rectangles are scaled copies because all of the angles are the same and all sides of the smaller rectangle are multiplied by the same scale factor of 3 to get the corresponding side lengths on the bigger rectangle.

This is shown here:

6 x 3 = 18 and 4 x 3 = 12

In lesson 5, we saw patterns that existed for different scale factors.

when we look at the 3 sets of figures, each set shows a different pattern in scale factors.

Beyonce: If the copy is smaller, the scale factor is less than 1.

Avatar: If the copy is larger, the scale factor is greater than 1.

Skateboard: If the copy is the exact same, the scale factor is exactly 1.

In lesson 7, you explored the use of scales for scale drawings.

this map is a scale drawing. The scale shows that 1 cm on the map represents 30 miles on land.

This means that if the distance between Amarillo and Oklahoma City on the scale drawing is 8.5 cm, the distance between the cities in real life is 255 miles. This is because 8.5 x 30 = 255.