14. Answer each question and place one answer per blank. How many vertices does a pyramid have if the base is a. rectangular? b. pentagonal? c. hexagonal? d. heptagonal? e. What pattern do you see in parts (a) (d)? Use it to write a formula that gives the number of vertices in a pyramid that has an n-gon for its base. 15(G). Is it correct to use the term \"circular\" to describe a baseball? 1. Use the following cube to name each of the following. a. Four non-coplanar points b. Two pairs of parallel faces. c. Two pairs of intersecting faces. d. Two pairs of parallel edges. e. Two pairs of skew edges. f. Two pairs of perpendicular edges. B c 2. Using the figure below, find the intersection of each group of shapes. Your answer may be a plane, a segment, or a point. a. plane HGF and plane EHD? b. plane 4BC and plane EGC? c. plane 4BC and GC? d. plane ADH and AD? e. planes ABC, FBC and DHG? f. planes EGC, EFG and DHA? H G 3. How many cubes are needed to make each figure? Assume blocks on top are supported by blocks beneath. 3 ) ) 4. Suppose the sides of the following arrangement of cubes are painted. If the smaller cubes are separated, how many will have paint on exactly a. one face? b. two faces? c. three faces? 5(G). The picture below shows the net of a pyramid. a. Explain why AH =~ GH. b. What other pairs of segments must be congruent and why? 6(G). Thomas claims that two parallel lines must also be skew because they do not intersect. How do you as his teacher correct his thinking? 7. Which of the following are polyhedra? Write \"yes\" or \"no\" for each part. a) b) 9] d) v/ -M v' e 8. Give the name of each shape. Be specific! \\;\\\\ a) b)