Topic 7 Similarity Review Day 1

Presentation

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Mathematics

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9th - 12th Grade

•

Practice Problem

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Medium

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CCSS

6.NS.B.3, HSG.SRT.A.2, 8.G.A.3

Standards-aligned

Victor Caraveo

Used 5+ times

FREE Resource

7 Slides • 6 Questions

Topic 7 Common Assessment Review Day #1

Similar Triangles

Use similarity rule to match up corresponding sides.
Set up a proportion with fractions of correspoinding sides
Solve by cross multiplying (or easiest algebra method for you)

Example:

If ΔAGM ∼ ΔKXD, find the value of x.

Dropdown

If ΔJKL ∼ ΔNML, find the values of x and y.

x=

and

y=

Fill in the Blanks

If ΔTLY ∼ ΔCHK, find LY.

LY =

(Enter a number only)

Scale Factor

Identify preimage (old) and image (new)
Set up a fraction k of coresponding sides or points.
Reduce the fraction

Example:

Math Response

Find the scale factor k for the dilation.

(Enter as a number, fraction, or decimal.)

Type answer here

Deg^°

Rad

Dilation

Dilation of Coordinates

Example

Find the new coordinates after the following transformation:

dilation of 3/2 about the origin

E(-1,2), F(1, 3), G(2, 0)

Multiply each x and y coordinate in the ordered pair by the scale factor.

Graphing

Find the new coordinates afte the following transformation:

Dilation of .5 about the origin:

J(-2,2), K(4, 4), L(0, -2)

Dropdown

Perform the following transformation:

Dilation of 2.5 about the origin.

(Choose the correct coordinates)

U'

, V'

, W'

Math Response

Find the scale factor:

(Enter the number as a fraction, decimal, or integer)

Type answer here

Deg^°

Rad

Topic 7 Common Assessment Review Day #1

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