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# NorthCrawford GeoCh3

### Lines and Angles

TermDefinition
Parallel Lines Coplanar lines that do not intersect.
Skew Lines Non-coplanar lines, are not parallel, and they do intersect.
Parallel Planes Planes that do not intersect.
Transversal A line that intersect two or more coplanar lines at distinct points.
Alternate Interior Angles Nonadjacent interior angles that lie on opposite sides of the transversal.
Same-side Interior Angles Interior angles that lie on the same-side of the transversal.
Corresponding Angles Angles that lie on the same side of the transversal (t) and in corresponding positions.
Alternate Exterior Angles Nonadjacent exterior angles that lie on opposite sides of the transversal.
Auxiliary Line Line that you add to a diagram to help explain relationships in proofs.
Exterior Angle Of A Polygon Angle formed by a side and an extension of an adjacent side.
Remote Interior Angles Two nonadjacent interior angles.
Slope measure of a line is the ratio of the vertical change Rise/Run
Slope-Intercept Form Equation of a non-vertical line is y = mx + b, where m is the slope and b is the intercept.
Point-Slope Form Equation of a non-vertical line is y - y^1 = m(x - x^1), where m is the slope and (x^1,y^1) is a point on the line.
Created by: mbuening