7.2.2 Using Proportional Relationships

Question 1

Indirect measurement

Answer 1

it is any method that uses formulas, similar figures, and/or proportions to measure an object.

Question 2

scale drawing

Answer 2

it represents an object as smaller than or larger than its actual size.

Question 3

drawing’s scale

Answer 3

the ratio of any length in the drawing to the corresponding actual length.

Question 4

Proportional Perimeters and Areas Theorem

Answer 4

If the similarity ratio of two similar figures is a/b , then the ratio of their perimeters is a/b , and the ratio of their areas is a^2/b^2 or (a/b)^2