13th Edition

ISBN: 9780135960363

Author: BILLSTEIN

Publisher: PEARSON

Concept explainers

A percentage is a number indicated as a fraction of 100. It is a dimensionless number often expressed using the symbol %.

Algebraic Expressions

In mathematics, an algebraic expression consists of constant(s), variable(s), and mathematical operators. It is made up of terms.

Numbers

Numbers are some measures used for counting. They can be compared one with another to know its position in the number line and determine which one is greater or lesser than the other.

Subtraction

Before we begin to understand the subtraction of algebraic expressions, we need to list out a few things that form the basis of algebra.

Addition

Before we begin to understand the addition of algebraic expressions, we need to list out a few things that form the basis of algebra.

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Textbook Question

Chapter 12.3, Problem 13MC

Mathematical Connections

In the following figure, A B ↔ ∥ E D ↔ and B C ¯ ≅ C E ¯ . Explain why D E = A B .

Chapter 12.3, Problem 13MC, Mathematical Connections In the following figure, ABED and BCCE. Explain why DE=AB.

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Chapter 12.3, Problem 12MC

Chapter 12.3, Problem 14MC

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Chapter 12 Solutions

A PROBLEM SOLVING APPROACH TO MATHEMATI

Ch. 12.1 - Can you construct a triangle using the lengths...Ch. 12.1 - A triangle has two sides of length 10cm and 14cm....Ch. 12.1 - For the Figure below, answer the following Point C...Ch. 12.1 - In a circle with centre A and radius AB, let P be...Ch. 12.1 - In the following kite, congruent segments are...Ch. 12.1 - If the kite in exercise 5 were concave, do the...Ch. 12.1 - a. Are all rectangles whose diagonals are 19in....Ch. 12.1 - Explain why the quadrilateral ABCD is a kite.Ch. 12.1 - To draw the perpendicular to a line l through a...Ch. 12.1 - In the following drawing a compass is used to draw...

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Mathematical Connections In the following figure, A B ↔ ∥ E D ↔ and B C ¯ ≅ C E ¯ . Explain why D E = A B .

Solution Summary: The author explains that DE = AB, because Delta ABCcong

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Chapter 12 Solutions