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STAAR Math 8 RC3

Authored by Aida Garcia

Mathematics

8th Grade

Used 44+ times

STAAR Math 8 RC3
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18 questions

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1.

MULTIPLE CHOICE QUESTION

3 mins • 1 pt

Media Image

In the diagram a person who is 6 ft tall is standing on the ground 3 ft away from point P. A line segment drawn from the top corner of the building to point P creates two similar triangles. Which proportion can be used to find h, the height of the building in feet?

3/h=18/6
6/3=h/18
3/15=h/6
6/3=18/h

2.

MULTIPLE CHOICE QUESTION

3 mins • 1 pt

Media Image

Figure I and Figure II are similar pentagons. Which proportion must be true?

y/x=4.2/3.15
6/x=5.25/7
y/6=7/5.25
x/4=3/6

3.

MULTIPLE CHOICE QUESTION

3 mins • 1 pt

Media Image

Triangle QRS and triangle QTV are similar. Which equation must be true?

TV/RS=TQ/RQ
TQ/VQ=TV/TR
VQ/SQ=RQ/RS
TV/VQ=RS/RQ

4.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

Media Image

Polygon QRST below was dilated by a scale factor of 9/5 to create polygon Q’R′S′T′. What is the length in centimeters of R’S′?

3.6
11.7
8.3
4.7

5.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

Media Image

Circle I was dilated with the origin as the center of dilation to create Circle II. Which rule best represents the dilation applied to Circle I to create Circle II?

(x, y) → (⅜ x, ⅜ y)
(x, y) → (8/3 x, 8/3 y)
(x, y) → (x + 5, y + 5)
(x, y) → (x – 5, y – 5)

6.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

Media Image

Figure S, the small arrow, was dilated with the origin as the center of dilation to create Figure T, the large arrow. Which rule best represents the dilation that was applied to Figure S to create Figure T?

(x, y) → (2x, 2y)
(x, y) → (4x, 4y)
(x, y) → (½ x, ½ y)
(x, y) → (¼ x, ¼ y)

7.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

Media Image

Quadrilateral ABCD was dilated with the origin as the center of dilation to create quadrilateral A’B’C’D’. Which rule best represent s the dilation that was applied to quadrilateral ABCD to create quadrilateral A’B’C’D’?

(x, y) →(⅜ x, ⅜ y)
(x, y) → (8/3 x, 8/3 y)
(x, y) → (x + 5, y + 5)
(x, y) → (x – 5, y – 5)

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