   Chapter 10.3, Problem 12E ### Elementary Geometry for College St...

6th Edition
Daniel C. Alexander + 1 other
ISBN: 9781285195698

#### Solutions

Chapter
Section ### Elementary Geometry for College St...

6th Edition
Daniel C. Alexander + 1 other
ISBN: 9781285195698
Textbook Problem
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# In Exercises 11 to 16, supply the missing coordinates for the vertices, using as few variables as possible. D E F is an isosceles triangle with D F - = F E -

To determine

To find:

The missing coordinates for the vertices.

Explanation

The given figure is shown below.

From the figure, the following observations are made.

Since, the vertex D is at the origin.

The coordinates of D0, 0.

Now, consider the vertex E.

Here, x-coordinate is given as 2a.

In the E vertex, observe where it lies on y-axis.

Since, it is at 0, the vertex E has the coordinates 2a, 0.

The distance from D to E in the x-axis is 2a.

F lies midway between D and E

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