Answer The scalar factor of the similarity of the given triangles is 2 5 . Explanation Given information: AB BC AC TR RI TI 6 8 10 20 25 15 SSS similarity theorem: If the sides of two triangles are in proportion, then the triangles are similar. Scalar factor: If the two polygons are similar, then the ratio of the length of two corresponding sides is called the scalar factor of the similarity. Now consider one triangle has vertices A,B, and C and another triangle has vertices T, R, and I. AB BC AC TR RI TI 6 8 10 20 25 15 Now, Compare the longest sides, A C R I = 10 25 = 2 5 Compare the shortest sides, A B T I = 6 15 = 2 5 Compare the remaining sides, B C T R = 8 20 = 2 5 Therefore, A C R I = B B T I = B C T R = 2 5 All the corresponding sides of two triangles are in proportion, therefore the triangles are similar. And as the scalar factor is the ratio of the length of two corresponding sides. Therefore, Scalar factor= = A C R I = B B T I = B C T R = 2 5 Hence, the given triangles are similar by SSS similarity theorem and the scalar factor of the similarity of the given triangles is 2 5 .

McDougal Littell Jurgensen Geometry: Student Edition Geometry

5th Edition

ISBN: 9780395977279

Author: Ray C. Jurgensen, Richard G. Brown, John W. Jurgensen

Publisher: Houghton Mifflin Company College Division

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Question

Polygon with three sides, three angles, and three vertices. Based on the properties of each side, the types of triangles are scalene (triangle with three three different lengths and three different angles), isosceles (angle with two equal sides and two equal angles), and equilateral (three equal sides and three angles of 60°). The types of angles are acute (less than 90°); obtuse (greater than 90°); and right (90°).

Chapter 7.5, Problem 9WE

To determine

To find: The scalar factor of the similarity of the given triangles.

Expert Solution & Answer

Answer to Problem 9WE

The scalar factor of the similarity of the given triangles is 25 .

Explanation of Solution

Given information:

AB	BC	AC	TR	RI	TI
6	8	10	20	25	15

SSS similarity theorem: If the sides of two triangles are in proportion, then the triangles are similar.

Scalar factor: If the two polygons are similar, then the ratio of the length of two corresponding sides is called the scalar factor of the similarity.

Now consider one triangle has vertices A,B, and C and another triangle has vertices T, R, and I.

AB	BC	AC	TR	RI	TI
6	8	10	20	25	15

Now,

Compare the longest sides, ACRI=1025=25

Compare the shortest sides, ABTI=615=25

Compare the remaining sides, BCTR=820=25

Therefore,

ACRI=BBTI=BCTR=25

All the corresponding sides of two triangles are in proportion, therefore the triangles are similar.

And as the scalar factor is the ratio of the length of two corresponding sides.

Therefore,

Scalar factor= =ACRI=BBTI=BCTR=25

Hence, the given triangles are similar by SSS similarity theorem and the scalar factor of the similarity of the given triangles is 25 .

Chapter 7.5, Problem 8WE

Chapter 7.5, Problem 10WE

Chapter 7 Solutions

McDougal Littell Jurgensen Geometry: Student Edition Geometry

Ch. 7.1 - Prob. 1CE Ch. 7.1 - Prob. 2CE Ch. 7.1 - Prob. 3CE Ch. 7.1 - Prob. 4CE Ch. 7.1 - Prob. 5CE Ch. 7.1 - Prob. 6CE Ch. 7.1 - Prob. 7CE Ch. 7.1 - Prob. 8CE Ch. 7.1 - Prob. 9CE Ch. 7.1 - Prob. 10CE

Ch. 7.1 - Prob. 11CE Ch. 7.1 - Prob. 12CE Ch. 7.1 - Prob. 13CE Ch. 7.1 - Prob. 14CE Ch. 7.1 - Prob. 15CE Ch. 7.1 - Prob. 16CE Ch. 7.1 - Prob. 17CE Ch. 7.1 - Prob. 18CE Ch. 7.1 - Prob. 1WE Ch. 7.1 - Prob. 2WE Ch. 7.1 - Prob. 3WE Ch. 7.1 - Prob. 4WE Ch. 7.1 - Prob. 5WE Ch. 7.1 - Prob. 6WE Ch. 7.1 - Prob. 7WE Ch. 7.1 - Prob. 8WE Ch. 7.1 - Prob. 9WE Ch. 7.1 - Prob. 10WE Ch. 7.1 - Prob. 11WE Ch. 7.1 - Prob. 12WE Ch. 7.1 - Prob. 13WE Ch. 7.1 - Prob. 14WE Ch. 7.1 - Prob. 15WE Ch. 7.1 - Prob. 16WE Ch. 7.1 - Prob. 17WE Ch. 7.1 - Prob. 18WE Ch. 7.1 - Prob. 19WE Ch. 7.1 - Prob. 20WE Ch. 7.1 - Prob. 21WE Ch. 7.1 - Prob. 22WE Ch. 7.1 - Prob. 23WE Ch. 7.1 - Prob. 24WE Ch. 7.1 - Prob. 25WE Ch. 7.1 - Prob. 26WE Ch. 7.1 - Prob. 27WE Ch. 7.1 - Prob. 28WE Ch. 7.1 - Prob. 29WE Ch. 7.1 - Prob. 30WE Ch. 7.1 - Prob. 31WE Ch. 7.1 - Prob. 32WE Ch. 7.1 - Prob. 33WE Ch. 7.1 - Prob. 34WE Ch. 7.1 - Prob. 35WE Ch. 7.1 - Prob. 36WE Ch. 7.2 - Prob. 1CE Ch. 7.2 - Prob. 2CE Ch. 7.2 - Prob. 3CE Ch. 7.2 - Prob. 4CE Ch. 7.2 - 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The scalar factor of the similarity of the given triangles .