Proportions
What method do we use to solve a proportion? In other words, what is the first step?
Cross-multiply
What does SAS~ stand for?
Side-Angle-Side similarity
How many letters does one triangle need in a similarity statement?
3
What does this symbol mean?
~
similar/ similarity
Solve for x.
9/x = 16/5
45/16 or 2.81
"If all corresponding sides are proportional, then the triangles are similar."
What kind of triangle similarity is this?
SSS~
Please fill in the blank for this similarity statement.
△NLM ~ △
RPQ
What is an included angle?
an angle in between two sides
True or False: The following fractions are proportional.
22/6 = 44/12
True
Are these triangles similar? If so, by what?
SAS~
Please fill in the blank for this similarity statement.
MNOL ~
QRSP
What is the definition of scale factor?
The ratio of corresponding sides.
Solve for x.
24/x+7 = 8/x+2
x = 1/2
Solve for x.
x = 10
△JEF ~ △PLS
Based off the similarity statement, list ALL congruent angles.
J ~ P
E ~ L
F ~ S
Do "proportional" and "congruent" mean the same thing? Explain why or why not.
No.
Proportional: corresponding
Congruent: equal