CBA 1 Review - Scale Drawing

Presentation

•

Mathematics

•

7th Grade

•

Hard

•

CCSS

8.G.A.2, HSG.SRT.A.2, 7.G.A.1

Standards-aligned

Geonetta James

Used 3+ times

FREE Resource

13 Slides • 6 Questions

CBA Review

Test Taking Strategies

UPS Check is a process we will use as we review test like questions to help with comprehension and problem solving.

Remember.....

A test is just a measurement of your understanding.
Take a deep breath.
Read the material carefully.
Take notes.
Follow the UPS Check and use your invisible questions in Google Classroom.
ALWAYS double check your work!
Make sure you select the correct answer before moving onto the next question.

Topic One : Scale Drawings

What are corresponding parts and angles ?

When part of an original figure matches up with part of a copy, we call them corresponding parts.
These could be points, lines, angles, or distances.

Whole Class Example

Multiple Choice

What are corresponding parts?

lines, points, and angles that are the same value or place on a shape

parts of a square

parts of a triangle

another word for the perimeter of a shape

Multiple Choice

Find the corresponding part to line segment ML.

Line Segment ST

Line Segment JK

Line Segment RS

Line Segment UT

You can use corresponding sides of similar figures to set up proportions.

Multiple Choice

Triangle HJK is similar to triangle LMN.

What proportion can be used to calculate the length of LM in centimeters?

$\frac{7.5}{11.25}=\frac{LM}{4.5}$

$\frac{6}{7.5}=\frac{LM}{9}$

$\frac{11.25}{LM}=\frac{4.5}{7.5}$

$\frac{9}{LM}=\frac{6}{4.5}$

Multiple Choice

What is the scale factor from ΔDEF to ΔABC?

1/2

7/3

10/3

Multiple Choice

What is the scale factor?

1/2

-2

You can use a scale on a map to figure out the actual distance when traveling.

How is distance typically measured?

Multiple Choice

UPS Check: The scale on a highway construction drawing is 0.5 inch for every 45 miles. If the drawing shows the highway is 4 inches long, how long is the actual highway

360 mi

11.25 mi

180 mi

22.5 in

CBA Review

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