California Geometry: Concepts, Skills, and Problem Solving by Cindy J. Boyd

By Cindy J. Boyd

Unit 1: Geometric constitution. Unit 2: Congruence. Unit three: Similarity. Unit four: Two-and Three-Eimensional dimension. criteria assessment. 846 pages.

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California Geometry: Concepts, Skills, and Problem Solving

Unit 1: Geometric constitution. Unit 2: Congruence. Unit three: Similarity. Unit four: Two-and Three-Eimensional size. criteria evaluate. 846 pages.

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14. What is another name for line n? 15. Does line ᐍ intersect line m or line n? Explain. Name the geometric term(s) modeled by each object. 16. 17. 18. 19. a tablecloth 20. a partially-opened newspaper 21. woven threads in a piece of cloth 22. a knot in a string Draw and label a figure for each relationship. 23. Line AB intersects plane Q at W. 24. Point T lies on WR. 25. Points Z(4, 2), R(-4, 2), and S are collinear, but points Q, Z, R, and S are not. 26. The coordinates for points C and R are (-1, 4) and (6, 4), respectively.

New Vocabulary midpoint segment bisector UNITS UNITS Distance Formulas Number Line P Q a b PQ = b - a or a - b Coordinate Plane The distance d between two points with coordinates (x 1, y 1) and (x 2, y 2) is given by d= EXAMPLE √(x 2 - x 1)2 + (y 2 - y 1) 2 . Find Distance on a Number Line Use the number line to find CD. # Alternative Method The coordinates of C and D are ‒5 and 1. CD = 1 - (-5) CD = -5 - 1 = 6 or 6 = -6 or 6 $ n n n n n n    Distance Formula Simplify. Use the number line to find each measure.

In this lesson, you will learn to measure angles in degrees. 1 1° = 360 of a turn around a circle 360° Measure Angles A ray is part of a line. It has E one endpoint and extends indefinitely in one direction. Rays are named stating the endpoint first and then any other point on the ray. The figure at the right shows ray EF, which can be symbolized as EF . This ray could also be named as EG , but not as FE because F is not the endpoint of the ray. F G If you choose a point on a line, that point determines exactly two rays called opposite rays.

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