This game practice basice properties used in Geometry: reflexive, symmetric, transitive, linear pair postulate, vertical angles theorem, segment addition postulate, angle addition postulate, definition of congruent segments, right angle congruence theorem, and definition of congruent angles.
To play the game you make copies of the 2 problem sheets on construction paper. Then you make one copy of the boy at the board (the old maid card). I usually make 10 sets of cards. Each set of cards needs