1. A student has a rectangular postcard that he folds in half lengthwise. Next, he rotates it continuously about the folded edge. Which three dimensional object below is generated by this rotation?

2. A three-inch line segment is dilated by a scale factor of 6 and centered at its midpoint. What is the length of its image?

(1) 9 inches
(2) 2 inches
(3) 15 inches
(4) 18 inches

3. Kevin’s work for deriving the equation of a circle is shown below.

x^{2} + 4x = -(y^{2} - 20

STEP 1 x^{2} + 4x = -y^{2} + 20
STEP 2 x^{2} + 4x + 4 = -y^{2} + 20 - 4
STEP 3 (x + 2)^{2} = -y^{2} + 20 - 4
STEP 4 (x + 2)^{2} + y^{2} = 16

In which step did he make an error in his work?

(1) Step 1
(2) Step 2
(3) Step 3
(4) Step 4

4. Which transformation of \overline{OA} would result in an image parallel to \overline{OA}?

(1) a translation of two units down
(2) a reflection over the x-axis
(3) a reflection over the y-axis
(4) a clockwise rotation of 90^{\circ} about the origin

5. Using the information given below, which set of triangles can not be proven similar?

6. A company is creating an object from a wooden cube with an edge length of 8.5 cm. A right circular cone with a diameter of 8 cm and an altitude of 8 cm will be cut out of the cube. Which expression represents the volume of the remaining wood?

(1) (8.5)^{3} - \pi(8)^{2}(8)
(2) (8.5)^{3} - \pi(4)^{2}(8)
(3) (8.5)^{3} - \dfrac{1}{3}\pi(8)^{2}(8)
(4) (8.5)^{3} - \dfrac{1}{3} \pi(4)^{2}(8)

7. Two right triangles must be congruent if

(1) an acute angle in each triangle is congruent
(2) the lengths of the hypotenuses are equal
(3) the corresponding legs are congruent
(4) the areas are equal

8. Which sequence of transformations will map \triangle ABC onto \triangle A'B'C'?

(1) reflection and translation
(2) rotation and reflection
(3) translation and dilation
(4) dilation and rotation

9. In parallelogram ABCD, diagonals \overline{AC} and \overline{BD} intersects at E. Which statement does not prove parallelogram ABCD is a rhombus?

(1) \overline{AC} \cong \overline{DB}
(2) \overline{AB} \cong \overline{BC}
(3) \overline{AC} \perp \overline{DB}
(4) \overline{AC} bisects \angle DCB

10. In the diagram below of circle O, \overline{OB} and \overline{OC} are radii, and chords \overline{AB}, \overline{BC}, and \overline{AC} are drawn.

Which statement must always be true?

(1) \angle BAC \cong \angle BOC
(2) m\angle BAC = \dfrac{1}{2}m\angle BOC
(3) \triangle BAC and \triangle BOC are isosceles
(4) The area of \triangle BAC is twice the area of \triangle BOC

11. A 20-foot support post leans against a wall, making a 70^{\circ} angle with the ground. To the nearest tenth of a foot, how far up the wall will the support post reach?

(1) 6.8
(2) 6.9
(3) 18.7
(4) 18.8

12. Line segment NY has endpoints N(-11, 5) and Y(5, -7). What is the equation of the perpendicular bisector of \overline{NY}?

(1) y + 1 = \dfrac{4}{3} (x + 3)
(2) y + 1 = -\dfrac{3}{4} (x + 3)
(3) y - 6 = \dfrac{4}{3} (x - 8)
(4) y - 6 = -\dfrac{3}{4} (x - 8)

13. In \triangle RST shown below, altitude \overline{SU} is drawn to \overline{RT} at U.

If SU = h, UT = 12, and RT = 42, which value of h will make \triangle RST a right triangle with \angle RST as a right angle?

(1) 6\sqrt{3}
(2) 6\sqrt{10}
(3) 6\sqrt{14}
(4) 6\sqrt{35}

14. In the diagram below, \triangle ABC has vertices A(4,5), B(2,1), and C(7,3).

What is the slope of the altitude drawn from A to \overline{BC}?

(1) \dfrac{2}{5}
(2) \dfrac{3}{2}
(3) -\dfrac{1}{2}
(4) -\dfrac{5}{2}

15. In the diagram below, \triangle ERM \sim \triangle JTM.

Which statement is always true?

(1) cos J = \dfrac{RM}{RE}
(2) cos R = \dfrac{JM}{JT}
(3) tan T = \dfrac{RM}{EM}
(4) tan E = \dfrac{TM}{JM}

16. On the set of axes below, rectangle ABCD can be proven congruent to rectangle KLMN using which transformation?

(1) rotation
(2) translation
(3) reflection over the x-axis
(4) reflection over the y-axis

17. In the diagram below, \overline{DB} and \overline{AF} intersect at point C, and \overline{AD} and \overline{FBE} are drawn.

If AC = 6, DC = 4, FC = 15, m\angle D = 65^{\circ}, and m\angle CBE = 115^{\circ}, what is the length of \overline{CB}?

(1) 10
(2) 12
(3) 17
(4) 22.5

18. Seawater contains approximately 1.2 ounces of salt per liter on average. How many gallons of seawater, to the nearest tenth of a gallon, would contain 1 pound of salt?

(1) 3.3
(2) 3.5
(3) 4.7
(4) 13.3

19. Line segment EA is the perpendicular bisector of \overline{ZT}, and \overline{ZE} and \overline{TE} are drawn.

Which conclusion can not be proven?

(1) \overline{EA} bisects angle ZET
(2) Triangle EZT is equilateral
(3) \overline{EA} is a median of triangle EZT
(4) Angle Z is congruent to angle T

20. A hemispherical water tank has an inside diameter of 10 feet. If water has a density of 62.4 pounds per cubic foot, what is the weight of the water in a full tank, to the nearest pound?

(1) 16,336
(2) 32,673
(3) 130,690
(4) 261,381

21. In the diagram of \triangle ABC, points D and E are on \overline{AB} and \overline{CB}, respectively, such that \overline{AC} \| \overline{DE}.

If AD = 24, DB = 12, and DE = 4, what is the length of \overline{AC}?

(1) 8
(2) 12
(3) 16
(4) 72

22. Triangle RST is graphed on the set of axes below.

How many square units are in the area of \triangle RST?

(1) 9\sqrt{3} + 15
(2) 9\sqrt{5} + 15
(3) 45
(4) 90

23. The graph below shows \overline{AB}, which is a chord of circle O. The coordinates of the endpoints of \overline{AB} are A(3,3) and B(3,-7). The distance from the midpoint of \overline{AB} to the center of circle O is 2 units.

What could be a correct equation for circle O?

(1) (x - 1)^{2} + (y + 2)^{2} = 29
(2) (x + 5)^{2} + (y - 2)^{2} = 29
(3) (x - 1)^{2} + (y - 2)^{2} = 25
(4) (x - 5)^{2} + (y + 2)^{2} = 25

24. What is the area of a sector of a circle with a radius of 8 inches and formed by a central angle that measures 60^{\circ}?

(1) \dfrac{8\pi}{3}
(2) \dfrac{16\pi}{3}
(3) \dfrac{32\pi}{3}
(4) \dfrac{64\pi}{3}