Twa kɔ nsɛm atitiriw so
Log in
Sign up for FREE
arrow_back
Laabri

Open Up - Grade 8 - Mathematics - Unit 1 - Lesson 9

star
star
star
star
star
Last updated over 1 year ago
7 Nsɛmmisa
1
7.G.5
8.G.1.a
…
1
7.G.5
8.G.1.a
…
1
7.G.5
8.G.1.a
…
1
7.G.5
8.G.1.a
…
1
7.G.5
8.G.1.a
…
1
7.G.5
8.G.1.a
…
1
7.G.5
8.G.1.a
…

"Source: Open Up Resouces (Download for free at openupresources.org.)"

Asemmisa {{asɛmmisaAhyɛnsode}}
1.

Do the following steps.

Draw parallel lines AB and CD.(show your work)

Pick any point E. Rotate AB 90 degrees clockwise around E.(show your work)

Rotate CD 90 degrees clockwise around E.(show your work)

What do you notice?(short answer)

Asemmisa {{asɛmmisaAhyɛnsode}}
2.

Use the diagram to find the measures of each angle.

(Match one answer per angle)

  • 50

  • 180

  • 90

  • 60

  • 130

  • 140

  • Angle ABC

  • Angle EBD

  • Angle ABE

Asemmisa {{asɛmmisaAhyɛnsode}}
3.

Points P and Q are plotted on a line.

Find a point R so that a 180-degree rotation with center R sends P to Q and Q to P.(Show your work)

Is there more than one point R that works for part a?(Multiple Choice)

Asemmisa {{asɛmmisaAhyɛnsode}}
4.

In the picture triangle A1B1C1 is an image of triangle ABC after a rotation. The center of rotation is D.

What is the length of side B1C1?

Asemmisa {{asɛmmisaAhyɛnsode}}
5.

In the picture triangle A1B1C1 is an image of triangle ABC after a rotation. The center of rotation is D.

What is the measure of angle B?

Asemmisa {{asɛmmisaAhyɛnsode}}
6.

In the picture triangle A1B1C1 is an image of triangle ABC after a rotation. The center of rotation is D.

What is the measure of angle C?

Asemmisa {{asɛmmisaAhyɛnsode}}
7.

The point (-4,1) is rotated 180 degrees counterclockwise using center (0,0).

What are the coordinates of the image?