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8 Cards in this Set

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Ratio
The quotient when the first number is divided by the second
Proportion
An equation stating that two ratios are equal
AA Similarity Postulate
If two angles of one triangle are congruent to two angles of another triangle, then the triangles are similar
SAS Similarity Theorem
If an angle of one triangle is congruent to an angle of another triangle and the sides including those angles are in porportion, then the triangles are similar
SSS Similarity Theorem
If the sides of two triangles are in proportion, then the triangles are similar
Triangle Proportionality Theorem
If a line parallel to one side of a triangle intersects the other two sides, the it divides those sides proportionally
Corollary
If three parallel lines intersect two transversals, then they divide the transversals proportionally.
Triangle Angle-Bisector Theorem
If a ray bisects an angle of a triangle, then it divides the opposite side into segments proportional to the other two sides