Chapter 8

Question 1

Proportional

Answer 1

When the ratios of all corresponding sides are the same.

Question 2

Similarity statements:

Answer 2

When two shapes are similar you can write it like: ∆Lmn ~ ∆ORS

Question 3

Corresponding angles are ____ and corresponding sides lengths are ____ by a scale factor k

Answer 3

Congruent
Proportional

Question 4

Thereom 8.1: perimeters of similar polygons

Answer 4

If two polygons are similar, then the ratio of their perimeters is = to the ratios of their corresponding side lengths

Question 5

For two figures to be ____, the corresponding angles must be _____ and the corresponding side lengths must be ______.

Answer 5

Similar
Congruent
Proportional

Question 6

Thereom 8.2: areas of similar polygons

Answer 6

If 2 polygons are similar, then the ratio of their areas is equal to the ratios of their corresponding side lengths

Question 7

Perimeter

Answer 7

Adding all outside lengths

Question 8

Area formula:

Answer 8

Bxh/2

Question 9

Thereom 8.3 angle angle (AA) similarity thereom

Answer 9

If two angles of one triangle are congruent to 2 angles of another triangle,then the two triangles are similar.
If <A congruent sign<D and <B congruent<E then triangle abc ~ triangle DEF