Chapter 7 Vocab

Question 1

Ratio

Answer 1

comparison of two quantities by division

Question 2

Extended Ratio

Answer 2

compares three or more numbers

Question 3

Proportion

Answer 3

equation that states that two ratios are equal

Question 4

Extremes

Answer 4

the first and last numbers in a proportion

Question 5

Means

Answer 5

the middle two numbers

Question 6

Cross Product property

Answer 6

the product of the extremes equals the product of the means

Question 7

Similar Figures

Answer 7

have the same shape but not necessarily the same size

Question 8

Similar polygons

Answer 8

two polygons if corresponding angles are congruent and if the lengths of corresponding sides are proportional

Question 9

Extended Proportions

Answer 9

where three or more rates are equal

Question 10

Scale Factor

Answer 10

ratio of corresponding linear measurements of two similar figures

Question 11

Scale Drawing

Answer 11

all lengths are proportional to their corresponding actual length

Question 12

Scale

Answer 12

ratio that compares each length in the scale drawing to the actual length

Question 13

Indirect Measurement

Answer 13

to find lengths that are difficult to measure directly

Question 14

Geometric Mean

Answer 14

for any two positive numbers ‘a’ and ‘b’, the geometric mean is the positive number ‘x’ such that (a/b)=(x/b)

Question 15

Sided Splitter Theorem

Answer 15

If a line is parallel to one side of the triangle and intersects the other two sides, then it divides those sides proportionally

Question 16

Triangle angle bisector theorem

Answer 16

If a ray bisects an angle of a triangle, then it divides the opposite side into two segments that are proportional to the other two sides of the triangle