Stepp's Prentice Hall Geometry Chapter 3 Parallel and Perpendicular Lines
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| Two angles are ____ if their measures add up to 90 degrees. | complementary
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| Two angles are ___ if their measures add to 180 degrees | supplementary
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| two intersecting lines form two pairs congruent ____ angles | vertical
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| A ___ pair consists of two angles that are adjacent and forms a straight line | linear
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| vertical angles are ___ | congruent
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| If two angles are a linear pair, then ____ | they are supplementary
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| A line intersecting two or more coplanar lines is called a ____ | transversal
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| angles that are in the same relative position are called ____ | corresponding angles
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| alternate means ____ | on opposite sides of the transversal
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| interior means ____ | between the parallel lines
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| exterior means ____ | outside the parallel lines
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| When parallel lines are crossed by a transversal only ___ sizes of angles are formed | 2
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| If parallel lines are cut by a transversal, then corresponding angles are ___ | congruent
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| When parallel lines are cut by a transversal then _____, ______, and _____ angles are congruent | corresponding, alternate interior, alternate exterior
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| if parallel lines are cut by a transversal, then alternate interior angles are ___ | congruent
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| if parallel lines are cut by a transversal, then alternate exterior angles are ___ | congruent
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| When you have a particular angle in a parallel line/transversal system any other angle in the system will be either ____ or _____ | congruent or supplementary
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| if lines are cut by a transversal such that alternate interior angles are congruent, then the lines must be ____ | parallel
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| if lines are cut by a transversal such that corresponding angles are congruent, then the lines must be ____ | parallel
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| if lines are cut by a transversal such that alternate exterior angles are congruent, then the lines must be ____ | parallel
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| If one angle in a parallel line/ transversal line system is 90, then all the angles are _____ | 90
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| slope = | rise over run
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| a line going up as you move from left to right has a ____ slope | positive
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| a line going down as you move from left to right has a ___ slope | negative
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| a vertical line has ___ slope | undefined
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| a horizontal line has ___ slope | zero
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| In a coordinate plane, two distinct lines are ____ if and only if their slopes are ____ | parallel, the same
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| In a coordinate plane, two nonvertical lines are ____ if and only if their slopes are ____ | perpendicular, negative reciprocals
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| the slope-intercept equation is | y = mx + b
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| In the slope-intercept form of the equation of a line "m" is the ___ | slope
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| In the slope-intercept form of the equation of a line "b" is the ___ | y-intercept
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| What is the slope of this line: y = 3x -2? | 3
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| What is the slope of this line: y = -4x + 2? | -4
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| What is the y-intercept of this line: y = 3x -2? | (0,-2)
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| To graph a line when you have the equation, just ___ | plot the y-intercept, then get another point by "rising and running" from that point
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| How do you graph a line with this equation: y=6x -1? | start at the intercept (0,-1), then from there, rise 6 and run 1
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| what kind of line has the equation y=2? | a flat line passing thru (0,2)
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| what kind of line has an equation x = -3? | a vertical line passing thru (-3, 0)
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| What is the midpoint of a line with endpoints (7, 10) and (3,16)? | (5,13)
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| What is the midpoint of a line having endpoints (3,8) and (3,0)? | (3,4)
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| If a line has one endpoint at (-2,6) and a midpoint at (1,1)? | (4, -4)
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| In an intersection with an angle of 35 degrees, what are the other 3 angles? | 145, 35, and 145 degrees
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| Two angles that are outside and opposite the transversal. | alternate exterior
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| Two angles that are opposite a transversal. | alternate
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| Two angles that are in between two lines. | interior
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| Two angles that are outside two lines. | exterior
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| Two angles that are in the same relative location. | corresponding
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| To construct a parallel | Make a transversal and copy the angle
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| The only kind of perpendicular we can make also must be a ___ | bisector
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| Regular means_____ | both equilateral and equiangular
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| The total of the interior angles in a triangle is ___ | 180
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| If you have a point and the slope use the ____ | point-slope form
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| Unless otherwise mentioned all polygons are ____ | convex
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| all polygons have an exterior angle sum of ___ | 360
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| isocseles means | two congruent sides, and two congruent angles
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| scalene means | no congruent sides or angles
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| The two ways we classify triangles is by thier ______ and ______ | sides and angles
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| In order to name a special pair of angles you need to | identify the pair of parallel lines and the transversal
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| In a parallel system all the angles will be either ___ or ___ | congruent or supplementary
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| In a triangle, an exterior angles is equal to ____ | the sum of the two remote interior angles
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| the key to finding the total of the interior angles in a polgyon is | caculating how many triangles can be formed from one vertex
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| Each ange will be the same in a ___ polygon | regular (or equiangular)
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| (n-2)180 is | the total degrees inside a polgon
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| a dodecagon has | 12 sides
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| a seven sided polygon is a | heptagon
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| a nonagon has | 9 sides
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| Ax + By = C is | the standard form of the equation of a line
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| If you are given two points, how can you get the equation of the line? | calculate the slope, then substitute the slope and one of the points into the point-slope formula
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| How can you graph by using the intercepts? | let x be zero to find the y-intercept and let vica versa
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| what is the word for a 27 sided figure? | 27-gon
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| In a right triangle the two acute angles are ____ | complementary
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| one slope must be + and one - if the lines are | perpendicular
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| To better analyze a drawing with several lines and for parallel relationships, you should isolate and redraw only the _ lines that frame the two angles you are analyzing | 2
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