Thinking Mathematically (6th Edition)

Published by Pearson
ISBN 10: 0321867327
ISBN 13: 978-0-32186-732-2

Chapter 1 - Problem Solving and Critical Thinking - 1.1 Inductive and Deductive Reasoning - Exercise Set 1.1: 42

Answer

The next shape will be a triangle with 5 "dashes" on its base.

Work Step by Step

The shapes are alternating between Triangles and Squares, and Triangle is the next shape in the sequence. Also, each time there is a new shape, one extra "dash" is added on to the base of each new shape, thus the next shape will have 5 marks.
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