Ratios & Proportions
Similar
Polygons
Polygons
Similarity by AA, SSS, & SAS
Triangle Proportionality
Three Parallel Lines
200
What is the method used to solve a proportion? (Two words)
Cross multiplication
200
True or false: Similar figures do NOT have congruent angles.
False
200
If two angles in one triangle are congruent to two angles in another triangle, then the two triangles are similar.
AA Postulate
200
(BE)/(EC)=?/(FC)
DF
200
True or false: The three parallel lines theorem be applied to any number of parallel lines and transversals.
True
400
Simplify this ratio.
50:250
1:5
400
What is true about the shape and size of similar figures?
same shape, different size
400
If two sides in one triangle are proportional to two sides in another triangle and the included angle in both are congruent, then the two triangles are similar.
SAS Similarity Theorem
400
(EC)/(CB)=(FC)/?
CD
400
a=12
600
4/5=x/30
x=24
600
Suppose △ABC ~ △JKL. What side is congruent to side JL?
side AC
600
These triangles are similar by ____.
SAS
600
y=5
600
What is x?
4760
800
x/10=42/35
x=12
800
What is the scale factor of △ABC to △XYZ?
3/4
800
These triangles are similar by ____.
AA
800
x=6
800
What is y?
3570
1000
Simplify this ratio.
30:25:20
6:5:4
1000
Suppose △ABC ~ △JKL. What angle is congruent to ∠K?
∠B
1000
If the corresponding sides of two triangles are proportional, then the two triangles are similar.
SSS Similarity Theorem
1000
(DB)/?=(BC)/(EC)
FE
1000
b=30