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T h i n k L i k e a M a t h e m a t i c i a n

Before you begin, review Four Steps for Problem Solving on page 71.

1. Fact: An ordered pair is a set of two numbers or letters that identifies a location in a coordinate system or on a map.

STEP 1 Study the map of Boston. The map uses one letter and one number to create an ordered pair.

Write a set of ordered pairs for each location on the map.

Beacon Hill ______ , ______

Boston Inner Harbor ______ , ______

Chinatown ______ , ______

North End ______ , ______

STEP 2 Plot three points on the map to form an equilateral triangle. The area of the triangle must include Faneuil Hall, Boston Common, and Beacon Hill. Write the ordered pairs that form the triangle.

______ , ______ ______ , ______ ______ , _____