Chapter 7 Flashcards
1
Q
What is a proportion?
A
Equal ratios
2
Q
What are some factors of similar figures?
A
Same shape; congruent angles; proportionate sides
3
Q
What is the scale factor?
A
The number you multiply by to get the second shape
4
Q
What are the three ways you can prove a triangle is similar?
A
AA, SAS; SSS
5
Q
How can you prove a triangle similar using AA?
A
Two angles are congruent
6
Q
How do you prove a triangle congruent using SAS?
A
A proportion comparing two sides proves the sides proportional and one pair of angles is congruent
7
Q
How do you prove a triangle congruent using SSS?
A
You set up the three sides equal to each other in ratio format and prove them proportionate
8
Q
What is a ratio?
A
A comparison of two numbers
