Geometry 7-2 Similar Polygons
starstarstarstarstarstarstarstarstarstar
by Matthew Richardson
| 30 Questions
Note from the author:
A complete formative lesson with embedded slideshow, mini lecture screencasts, checks for understanding, practice items, mixed review, and reflection. I create these assignments to supplement each lesson of Pearson's Common Core Edition Algebra 1, Algebra 2, and Geometry courses. See also mathquest.net and twitter.com/mathquestEDU.
The outlined content above was added from outside of Formative.
The outlined content above was added from outside of Formative. 1
1
10 pts
Solve It! A movie theater screen is in the shape of a rectangle 45 ft wide by 25 ft high. Which of the TV screen formats would show the most complete scene from a movie shown on the theater screen?
Standard
Letterbox   The outlined content above was added from outside of Formative. 2
2
10 pts
Problem 1 Got It?
A
B
C
D 3
3
10 pts
Problem 1 Got It?
A
B
C
D
The outlined content above was added from outside of Formative. 4
4
10 pts
Problem 2 Got It?
A
B
C
D 5
5
10 pts
Problem 2 Got It?
A
B
C
D
The outlined content above was added from outside of Formative. 6
6
10 pts
Problem 3 Got It?
A
B
C
D The outlined content above was added from outside of Formative. 7
7
10 pts
Problem 4 Got It?
A
B
C
D
The outlined content above was added from outside of Formative. 8
10 pts
Problem 5 Got It? Use the scale drawing above. What is the actual height of the towers above the roadway if the height of the towers in the drawing is 0.8 cm?
160 cm
80 m
80 cm
160 m
9
10 pts
Problem 5 Got It? Reasoning: The Space Needle in Seattle is 605 ft tall. A classmate wants to make a scale drawing of the Space Needle on an 8.5 in. by 11 in. sheet of paper. He decides to use the scale 1 in. = 50 ft. Is this a reasonable scale? Explain.   10
10
10 pts
A
B
C
D 11
11
10 pts
A
B
C
D 12
12
10 pts
A
B
C
D 13
13
10 pts
A
B
C
D 14
10 pts
Vocabulary: What does the scale on a scale drawing indicate? 15
16
15
10 pts
Error Analysis: The polygons in the diagram are similar. Which similarity statement is NOT correct.
A
B
16
10 pts
Error Analysis: Explain your response to the previous item.
17
10 pts
Reasoning: Classify each statement as true or false.
• true
• false
• Similarity is reflexive.
• Similarity is transitive.
• Similarity is symmetric. 18
18
10 pts
Vocabulary: The triangles in the digram are similar. Which of the following are similarity statements for the triangles? Select all that apply.
△ABS ~ △PRS
△SAB ~ △SRP
△BSA ~ △RSP
△SAB ~ △SPR Review Lesson 7-1: Assume the following proportion is true.
Use the proportion to complete the statements below. 19
20
21
22
23
19
10 pts
xy
63
16
7y
20
1 pt
x
y
7
9
21
1 pt
x
y
7
9
22
1 pt
y + 7
y + 9
y
9
23
1 pt
y + 7
y + 9
7
9 24
25
26
24
10 pts
Review Lesson 4-5: Name the isosceles triangles in the figure. Select all that apply.
△CBD
△DFE
△CAE
25
10 pts
Review Lesson 4-5: Select the lengths equal to CD.
DE
CB
AF
BA
BD
26
10 pts
Review Lesson 4-5: Find m∠A. Enter only a number. 27
27
10 pts
Review Lessons 4-2 & 4-3: Which theorem or postulate can you use to prove each pair of triangles congruent?
• SSS
• SAS
• AAS
• ASA
• Triangle Pair A
• Triangle Pair B
• Triangle Pair C   28
29
28
10 pts
Use Your Vocabulary: How are the two squares similar?
29
10 pts
Use Your Vocabulary: How are the two squares NOT similar?
30
10 pts
Reflection: Math Success