20. A building that is 50 feet tall casts a shadow 30 feet long. Nearby, a tree casts a 75 foot long shadow. How tall is the tree? (Hint: Use similar triangle ratios) Read it twice. Wording is tricky.

a. 95 ft

b. 110 ft

c. 125 ft

d. 140 ft

**Answers: 50/30 =x/75 so x = 125**

21. Which unit is correct for describing the surface area of a hexagonal pyramid?

a. cm

b. cm squared

c. cm cubed** **

**Answer: (b) Area is always “units squared”.**

22. If r>0 and s <0, in which quadrant of the xy-plane does the point (r,s) lie?

a. Quadrant I

b. Quadrant II

c. Quadrant III

d. Quadrant IV

**Answer: d. (+, -) in Quadrant IV**

23. Which set of points is equidistant from the rays that form an angle? (Hint: Draw it)

a. Perpendicular bisector

b. Skew Line

c. Angle Bisector

d. Central Angle

**Answer: C. Angle Bisector**

24. Which unit is used to measure the amount of liquid needed to fill a cylindrical container?

a. inches

b. square inches

c. cubic inches

**Answer: C. Filling a container is volume. Volume is always cubic units.**

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