Proportions
Solve this proportion x/5 = 4/2
x = 10
Definition of similar is:
Same shape, but different size
A class has 20 students, 8 boys and 12 girls. What is the ratio of girls to students.
12 to 20 or 12/20
What is a passing score for tomorrow's test
60%
Solve this proportion 10/x = 5/2
x = 4
What similarity statement for triangles list 3 sides that are proportional, SSS, SAS, or AA?
SSS side side side
What are the two types of ratios:
1. Part to whole
2. Part to part
Bell work for Thursday is thoughtful Thursday, students.....
review a quote and write what it means to them
See board for to solve for the missing side
side ab = 8
What similarity statement for triangles, states that triangles with two congruent or equal sides are similar? SSS, SAS, or AA
AA angle angle
Reduce this ratio: 5 to 20
1 to 4 or 1/4
What are the 3 similarity statements we learned this chapter
SSS, SAS, AA
What kind of multiplication is used to solve a proportion?
cross multiplication
What similarity statement for triangles states that two triangles are similar if they have two sides that are proportional with an angle in between those two sides? SSS, SAS, or AA
SAS side angle side
Fill in the blank: We can use ratios to solve ____________________ problems.
Proportional
Triangle ABC is similar to Triangle XYZ. Segment AB = 4, Segment BC = 6, Segment AC = 8 and Segment XY = 8, Segment YZ = 12, Segment XZ = 16 what is the scale factor?
Scale factor 2
Triangles ABC and DEF are similar. Segment AB = 4, Segment BC = 6, and Segment DE = 12, solve for segment EF.
Bonus what is the scale factor
Scale factor = 3
180 Degrees
What is the ratio of students to teacher in this class, if everyone is present?
5 to 2 or 5/2
By the end of the second grading period students should be what percent complete with Geometry Semester 2
50%