Problem Set 4.2

GSP file with solutions for Problem 4.2.1.

Problem 4.2.2 See GSP file


Note: If ABCD with AB = BC is not convex, there are other cases:

a. A, B, C, and D are in the same plane and ABCD is concave

b. A, B, C, and D are not in the same plane.

c. ABCD not a simple polygon. That is, for example, D may be located so that BC and DA will cross.

GSP File for exploration with Problem 4.2.3 and solutions.


Click HERE to see one solution

Click HERE to see a solution by Brian Swanagan





GSP File for Problems 4.2.6 Solutions







Problem 4.2.7 See GSP File


Problem 4.2.8

M, B, and T are on a circle with center O. A tangent is drawn through T that intersects the line MB at A. Do the following:

a. If AM = MB = a, find AT in terms of a.

b. If A is a point in the exterior of the circle, construct a secant through A that intersects the line MB at A such that M is the midpoint of AB. Investigate the construction, describe the steps in the construction, and prove the construction is valid.

GSP file for the solutions to Problem 4.2.8


Can this Problem and its solution be adapted to provide an alternative way for constructing the Geometry Mean?


GSP file with solution for Problem 4.2.10


GSP file with correct solution for Problem 4.2.11


Open GSP file for solution.


GSP file for Problem 4.2.13.


Problem 4.2.14 (Note error in the textbook problem statement)

Open GSP file?


Problem 4.2.15

GSP file?


GSP File for Problem 4.2.16 solution


Problem 4.2.17

GSP file for Problem 4.2.17 Solution


GSP file for solutions to Problem 4.2.18


Click HERE to see alternative solutions to Part (a) and the construction for Part (b).