Explanation Given: Also, given that the Δ A C B is a golden triangle. Approach: A golden triangle is an isosceles triangle in which the apex angle measures 36 o . Calculation: From figure, < A = 36 o . As sum of angles of triangle is 180 o , Due to Δ A C B is isosceles triangle, its base angles will be equal. So, < A + < B + < C = 180 o Therefore, < B = < C = 72 o . As seen from figure, point C and D lie on same arc centered at point B. Therefore, B C = B D

A Problem Solving Approach to Mathematics for Elementary School Teachers (12th Edition)

12th Edition

ISBN: 9780321987297

Author: Rick Billstein, Shlomo Libeskind, Johnny Lott

Publisher: PEARSON

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Question

Chapter 12.4, Problem 8MC

To determine

To prove:

ΔBCD is a golden triangle.

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Chapter 12.4, Problem 7MC

Chapter 12.4, Problem 9MC

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Chapter 12 Solutions

A Problem Solving Approach to Mathematics for Elementary School Teachers (12th Edition)

Ch. 12.1 - If quadrilateral ABCDEFGH, then complete the...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. a. If...Ch. 12.1 - In a circle with centre A and radius AB, let P be...Ch. 12.1 - Prob. 6MC Ch. 12.1 - Prob. 7MC Ch. 12.1 - Prob. 8MC Ch. 12.1 - Prob. 9MC Ch. 12.1 - Explain why the quadrilateral ABCD is a kite.

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