Similarity Test Review

Presentation

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Mathematics

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10th Grade

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Practice Problem

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Medium

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CCSS

HSG.SRT.B.5, 8.EE.B.5, 7.RP.A.2B

Standards-aligned

Mike Kool

Used 16+ times

FREE Resource

11 Slides • 9 Questions

Similarity Test Review

Similarity Boot Camp

Finding Missing Sides of Similar Polygons.

Find Corresponding Sides.
Set up the proportion with the ratio of the corresponding sides.
Solve for x.

Multiple Choice

Solve for x.

100

0.1

Multiple Choice

The pair of figures is similar. Find the missing side.

x = 12

x = 3

x = 40

x = 4

Similarity Theorems for Triangles.

SSS: Find the ratios of ALL the sides!
SAS: Order matters. 1 Congruent angle sandwiched by 2 proportionate sides.
AA: 2 angles that are congruent. MAKE SURE YOU DOUBLE CHECK!

Multiple Choice

How do these triangles appear to be similar?
(Hint: Look for non-labeled parts!)

SAS

SSS

Not Similar

Multiple Choice

If the triangles are similar, state how.

SSS

SAS

Not similar.

Dilations

Find the scale factor!
Which one is the image, which is the pre-image.

Multiple Choice

State the coordinate of the image of the given point B (-10,-6) under a dilation with center at the origin with the given scale factor k = 1/2.

(5,3)

(20,12)

(-20,-12)

(-5,-3)

Multiple Choice

How do you write the algebraic notation when the scale factor is 3?

(x, y) goes to (1/3x, 1/3y)

(x, y) goes to (-3x, -3y)

(x, y) goes to (x + 3, y + 3)

(x, y) goes to (3x, 3y)

Slope

Rise over Run!
$\frac{y2-y1}{x2-x1}$
Find and list your x/y coordinates, plug them into your slope formula.

Multiple Choice

Find the slope given the points (2, −7) and (−1, 6).

-13/3

13/3

2/3

Parallel and Perpendicular lines

Parallel lines: The same exact slope. (the same m)-- y=2x+5 and y=2x+3
Perpendicular lines: y=1/2x+4 and y=-2/1+3

Multiple Choice

Write the equation of the line PARALLEL to the line y = 4x - 9 that passes through the point (-2, 4)

y = 4x + 12

y = -4x -4

y = -1/4x + 5/2

Multiple Choice

y = -2/3x + 2

y = 3/2x + 9

These lines are...

Parallel

Perpendicular

Neither

Similarity Test Review

Similarity Boot Camp

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