   Chapter 7.CT, Problem 17CT ### 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
1 views

# Sketch the parabola that has directrix d and focus F. To determine

To sketch:

The parabola that has directrix d and focus F.

Explanation

Calculation:

A parabola is the locus of points that are equidistant t from a fixed line and a fixed point not on that line.

Given:

Draw FAd at point A. Note that FA is the axis of symmetry of the parabola. Locate the midpoint of FA, which is also the vertex V of the parabola.

Through F, draw a line parallel to d. With a compass, measure the distance FA and mark off arcs of that length on the parallel line (on both sides of F)

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