Similarity
10
Solve for x
3
Solve for x
5
Solve for x
7
Solve for x
9
Solve for x
AA
State the reason the triangles are similar
SAS
State the reason the triangles are similar
Dilation
A transformation that enlarges or reduces in size
18
Solve for SH
Ratio
A comparison of two numbers
Proportion
Equal Ratios
Similar Figures
Figures that have the same shape but a different size; the angles are congruent and the sides are proportionsal
SAS Similarity Postulate
If 2 corresponding sides of two triangles are proportional, and the angle between the sides are congruent, the two triangles are similar.
SSS Similarity Postulate
If all 3 corresponding sides two triangles are proportional, the two triangles are congruent
AA Similarity Postulate
If two angles one one triangle are congruent to corresponding angles in a second triangle, the two triangles are similar
Scale Factor
The ratio of any two corresponding lengths in two similar geometric figures
Corresponding Angles
When two parallel lines are crossed by another line (transversal) the angles in matching corners are congruent.