Group Activity Cards

Geometry Number of players: 2 Materials: Index cards, spinners

Two (More) Sides to the Story

Copy onto cards the numbers shown below, one per card. Shuffle the cards and place them face down in a pile. Label equal sections of two spinners "30°" and "45°."

Each partner selects a card. Then each partner spins one of the spinners. Try to be the first to find the lengths of the other two sides of a right triangle if the card tells the length of one side of the triangle and the spinner tells the measure of the angle opposite the side with the given length. Play several rounds.