Refer to tiles (a) through (g) below in doing Exercises 15 and 16.

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Question 20.45

15. For each tile (a) through (c), determine whether it can be used to tile the plane by translations. (From Frederick Barber et al., Tiling the Plane, COMAP, Lexington, MA, 1989, pp. p. 1 p. 8, 9.)

15.

(a) No

(b) No

(c) No