9.2 Similar Polygons
9.3 Similar Triangles
9.4 Proportional Parts and Triangles
9.5 Triangles and Parallel Lines
9.6 Proportional Parts and Parallel Lines
9.7 Perimeter and Scale Factor
100
What is a polygon?
Closed figure formed by sides, must have at least three sides
100
What are the three "shortcuts" that we can use to determine if triangles are similar?
SSS, SAS, AA
100
Complete the proportion:
AD/AB = ?/AC
AE
100
What does it mean to be Parallel?
Lines that will never intersect
100
Complete the Proportion:
AB/AC = DE/?
DF
100
What is Perimeter?
The sum of the sides of a shape
200
What two characteristics must polygons have in order to be considered similar?
1) Congruent Angles
2) Proportional Sides
200
The following triangles are similar. Finish the similarity statement, Triangle LFO is similar to Triangle ...
Triangle IHT
200
Find X.
x = 3.75
200
What proportion must be true for DE to be Parallel to BC.
AD/DB = AE/EC
200
Complete the proportion:
BC/AC = ?/DF
EF
200
Find the value of x.
x = 3
300
Determine if the polygons are similar.
Yes the polygons are similar.
300
The triangles are similar by what shortcut?
AA
300
X = 10/3 or 3.333
300
Determine if EB is parallel to DC.
Not Parallel
300
complete the proportion:
AB/? = DE/EF
BC
300
Given the perimeter find x, y, and z.
x = 3, y = 2.5, and z = 2
400
Determine if the polygons are similar.
Not similar.
400
Which shortcut would you use to determine if the following triangles are similar?
SSS
400
Find x.
x = 11
400
Determine if DE is parallel to CB.
Yes, DE is parallel to CB.
400
Solve for x.
x = 7.5
400
Determine Scale factor of Triangle STU to Triangle PQR
2/3
500
Determine if the polygons are similar.
Yes they are similar!
500
Determine if the triangles are similar and state the shortcut you used to determine.
Not Similar
500
Find x.
x = 19/2 or 9.5
500
Determine if PQ is parallel to FE.
Not Parallel
500
x = 1.5
500
Determine the scale factor of Triangle PQR to Triangle STU
3/2