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Chapter 3 Vocabulary

Name: ___________________________________
Date: __________________ Block: ____________
Complete only after you have finished Unit 2 Test.
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Across
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(p. 174) ____________ interior angles are interior angles that lie on the same side of transversal t.
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(p. 173) ____ lines are lines that do not intersect and are not coplanar.
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(p. 200) Two nonvertical lines are perpendicular if the _______ of their slope is -1.
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(p. 173) ________ planes are planes that do not intersect.
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(p. 188) In a coordinate plan of the, the _____ of a line is the ratio of the change along the y-axis to the change along the x-axis between any two points on the line.
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(p. 174) Four ________ angles lie in the region between lines q and r.
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(p. 182) _____________ Transversal Theorem - In a plane, if a line is _____________ to one of two parallel lines, then it is _____________ to the other.
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(p. 174) _____________ angles lie on the same side of transveral t and on the same side of lines q and r.
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(p. 208) Parallel Postulate - If given a line and a point not on the line, then there exists _______ one line through the point that is parallel to the given line.
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(p. 173) ______ are used to indicate that lines are parallel.
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(p. 189) All numbers divided by 0 will have a(n) _________ slope.
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(p. 180) Corresponding Angles _________ - If two parallel lines are cut by a transversal, then each pair of corresponding angles in congruent.
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(p. 181) Alternate Exterior Angles Theorem - If two parallel lines are ___ by a transversal, then each pair of alternate exterior angles is congruent.
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(p. 199) When substituting negative coordinates, use ___________ to avoid making errors with the signs.
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(p. 174) __________ interior angles are nonadjacent interior angles that lie on opposite sides of transversal t.
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(p. 182) You should assume that lines are parallel only if the information is _____ or the lines are marked with parallel arrows.
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(p. 181) Alternate Interior Angles _______ - If two parallel lines are cut by a transversal, then each pair of alternate interior angles is congruent.
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(p. 198) The slope-_________ form of a linear equation is y = mx + b, where m is the slope of the line and b is the y-intercept.
Down
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(p. 181) Consecutive Interior Angles Theorem - If two parallel lines are cut by a transversal, then each pair of consecutive interior angles is _____________.
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(p. 174) Consecutive interior angles are also called same-____ interior angles.
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(p. 174) A line that intersects two or more coplanar lines at two different points is called a(n) ___________.
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(p. 199) When the slope of a line is not given, use ___ points on the line to calculate the slope.
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(p. 198) The _____-slope form of a linear equation is y - y1 = m(x - x1), where (x1, y1) is any point on the line and m is the slope of the line.
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(p. 200) The equation of a ___________ line is y = b, where b is the y-intercept of the line.
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(p. 174) Four ________ angles lie in the two regions that are not between lines q and r.
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(p. 207) _________ of Corresponding Angles Postulate - If two lines are cut by a transversal so that corresponding angles are congruent, then the lines are parallel.
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(p. 201) The word ______ indicates a line.
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(p. 208) The father of geometry, ______ (c. 300 B.C.) realized that only a few postulates were needed to prove the theorems in his day.
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(p. 174) Alternate exterior angles are ___________ exterior angles that lie on opposite sides of transversal t.
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(p. 191) Lines with the ____ slope are parallel.
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(p. 198) When given the slope and either the y-intercept or a point on a line, you can use these forms to write the ________ of the line.
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(p. 173) Parallel lines are ________ lines that do not intersect.
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(p. 189) Slope can be interpreted as a(n) ____ of change, describing how to quantify y changes in relation to quantity x.