Question 1

If $\Delta$ A'B'C' is the image of $\Delta$ ABC, under which transformation will the triangles not be congruent?

Accepted Answer

dilation centered at the origin with scale factor 2

Answer

translation to the left 5 and down 4

Answer

rotation of 270° counterclockwise about the origin

Answer

reflection over the x-axis

Question 2

If x² +4x+y² -6y-12 =0 is the equation of a circle, the length of the radius is

Accepted Answer

5

Answer

25

Answer

16

Answer

4

Question 3

A triangle is dilated by a scale factor of 3 with the center of dilation at the origin. Which statement is true?

Accepted Answer

The area of the image is nine times the area of the original triangle.

Answer

The perimeter of the image is nine times the perimeter of the original triangle.

Answer

The slope of any side of the image is three times the slope of the corresponding side of the original triangle.

Answer

The measure of each angle in the image is three times the measure of the corresponding angle of the original triangle.

Question 4

The Great Pyramid of Giza was constructed as a regular pyramid with a square base. It was built with an approximate volume of 2,592,276 cubic meters and a height of 146.5 meters. What was the length of one side of its base, to the nearest meter?

Accepted Answer

230

Answer

133

Answer

73

Answer

77

Question 5

The angle of elevation from a point on the ground to the top of the tree is 34°. If the point is 20 feet from the base of the tree, what is the height of the tree, to the nearest tenth of a foot?

Accepted Answer

13.5

Answer

16.6

Answer

11.2

Answer

29.7

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