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Open Up - Grade 8 - Mathematics - Unit 1 - Lesson 14

By Formative Library
Last updated almost 3 years ago
7 Questions
1.

Use the diagram to find the measures of each angle.
(Only one answer per angle)

  • 60
  • 180
  • 90
  • 50
  • 130
  • 140
  • 40
  • Angle ABC
  • Angle EBD
  • Angle ABE
8.G.1.c
7.G.5
8.G.5
8.G.1.a
8.G.1.b
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
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
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
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
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
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
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