Open Up - Grade 8 - Mathematics - Unit 1 - Lesson 14
By Formative Library
starstarstarstarstar
Last updated over 2 years ago
7 Questions
1
1.
Use the diagram to find the measures of each angle.
(Only one answer per angle)
- 140
- 130
- 180
- 60
- 50
- 40
- 90
- Angle ABC
- Angle EBD
- Angle ABE
8.G.1.c
7.G.5
8.G.5
8.G.1.a
8.G.1.b
1
2.
Lines k and l are parallel, and the measure of angle ABD is 19 degrees.
Explain why the measure of angle ECF is 19 degrees. If you get stuck, consider translating line l by moving B to C.
8.G.1.c
7.G.5
8.G.5
8.G.1.a
8.G.1.b
1
3.
Lines k and l are parallel, and the measure of angle ABD is 19 degrees.
What is the measure of angle BCD?
8.G.1.c
7.G.5
8.G.5
8.G.1.a
8.G.1.b
1
4.
The diagram shows three lines with some marked angle measures.
Find the missing angle measures marked with question marks.
8.G.1.c
7.G.5
8.G.5
8.G.1.a
8.G.1.b
1
5.
The two figures are scaled copies of each other.
What are some ways that you can tell they are scaled copies?
8.G.1.c
7.G.5
8.G.5
8.G.1.a
8.G.1.b
1
6.
The two figures are scaled copies of each other.
What is the scale factor that takes Figure 1 to Figure 2?
8.G.1.c
7.G.5
8.G.5
8.G.1.a
8.G.1.b
1
7.
The two figures are scaled copies of each other.
What is the scale factor that takes Figure 2 to Figure 1?(Keep your answer as a fraction.)
8.G.1.c
7.G.5
8.G.5
8.G.1.a
8.G.1.b
"Source: Open Up Resouces (Download for free at openupresources.org.)"