70) What must be true for a pentagon so that it will tessellate a plane?

70) What must be true for a pentagon so that it will tessellate a plane? A) It never tessellates a plane. B) It has one pair of parallel sides. C) All of its sides must be the same length. D) It must be a regular pentagon. 71) How many different types of semiregular tessellations are there? 72) What must be true for a hexagon so that it will tessellate a plane? A) It has three pairs of parallel sides. B) It must be a regular hexagon. C) It has one pair of congruent angles. D) All of its sides must be the same length. 73) How many polygon arrangements does a semi-regular tessellation have? A) Exactly three B) Exactly two or four C) Exactly two or three D) Exactly four 74) Will any parallelogram tessellate the plane?