CBA 1 Review 8th Grade Math

Triangle ABC has vertex A(2, 8). Triangle ABC is dilated. The vertex of the dilation of A is A′(3, 12). Which algebraic representation best describes this dilation?

• (x, y) ---> (0.5x, 0.5y)

• (x, y)---> (x + 4, y + 7)

• (x, y)-->(2x, 2y)

• (x, y) --> (1.5x, 1.5y)

Tags

CCSS.HSG.CO.A.2

Which measurements could represent the side lengths of a right triangle?

• 24yd, 37 yd, 40 yd

• 18 yd, 21 yd, 29 yd

• 15 yd, 36 yd, 39 yd

• 6 yd, 24 yd, 26 yd

Tags

CCSS.8.G.B.8

The top of a ladder is placed against the side of a house. The ladder is 15 feet long and the wall is 12 feet high. How far from the wall will the base of the ladder by positioned if the top of the ladder meets the top of the wall?

• 10 feet

• 10.5 feet

• 9 feet

• 9.5 feet

Tags

CCSS.8.G.B.8

The coordinates of the triangle shown are A (0,1), B (5,1), and C (0,4).

What is the length of segment BC in units? Round to the nearest hundredths place if necessary.

Tags

CCSS.6.G.A.3

Determine if the triangles below are similar by angle-angle similarity.

• True

• False

Tags

CCSS.HSG.SRT.B.5

Trapezoid PQRS is dilated to form trapezoid P’Q’R’S’ with the origin being the center of dilation. Which algebraic representation best describes this dilation?

• (x, y) ---> (3/4x, 3/4y)

• (x, y) ---> ( 2/3x, 2/3y)

• (x, y) ---> (1/2x, 1/2y)

• (x, y) ---> (3/2x, 3/2y)

Tags

CCSS.8.G.A.3

The two figures are similar triangles. Which proportion must be true?

• 
• 
• 
• 

Tags

CCSS.8.EE.B.6

Three squares may be placed so that their sides form a right triangle. The squares below model the Pythagorean Theorem.

If square 1 is the largest of three squares in the model, which statement is NOT true?

• The area of Square 2 can equal the area of Square 3.

• The difference between the areas of Square 3 and Square 1 is equal to the area of Square 2.

• The area of Square 2 can equal the area of Square 1.

• The area of Square 1 is equal to the sum of the areas of Square 2 and Square 3.

Tags

CCSS.8.G.B.8

The side length of a larger square is 3 times the side length of a smaller square. Which of the following statements describes the area of the larger square?

• The area of the larger square is 27 times the area of the smaller square.

• A. The area of the larger square is 6 times the area of the smaller square.

• A. The area of the larger square is 9 times the area of the smaller square.

• The area of the larger square is 3 times the area of the smaller square.

Tags

CCSS.7.G.A.1

A sign broke during a storm. The diagram shows how it fell.

What was the original height of the sign?

• 10 feet

• 14 feet

• 18 feet

• 24 feet

Tags

CCSS.8.G.B.8