A Picture is worth 1 000 Words

1. A Picture is worth1000 Words Homework: Lesson 1.9 / 2-6, 18-24 Chapter 1 Test Friday

2. Objective • Recognize the benefits of sketching the given information from a problem in assisting your ability to solve the problem.

8. Locus of points • A locus is a set of points which satisfies a certain condition • Think of a locus as a “bunch” of points that all do the same thing. Remember:A locus is just a set of points.

9. Locus Theorem 1: The locus of points at a fixed distance, d, from point P is a circle with the given point P as its center and d as its radius. Locus Theorem 2: The locus of points at a fixed distance, d, from a line, l, is a pair of parallel lines ddistance from l and on either side of l. Locus Theorem 3: The locus of points equidistant from two points, P and Q, is the perpendicular bisector of the line segment determined by the two points. Locus Theorem 4: The locus of points equidistant from two parallel lines, l1 and l2 , is a line parallel to both l1 and  l2 and midway between them.

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15. 3. Ask yourself: What parts of the box/ribbon can’t you see?

16. 3. 14 * 2 = 9 * 2 = 5 * 4 = 28 18 20 66 in

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18. 4. G R P J 15 18 30

19. 50

20. 50