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Ch. 3 - Geometry 10

QuestionAnswer
Transversal A line that intersects two coplanar lines at two distinct points.
Alternate Interior Angles Non-adjacent angles that lie opposite sides of a transversal and between the intersected lines.
Same-side Interior Angles Angles that lie on the same side of a transversal and between the intersected lines.
Corresponding Angles Angles that lie on the same-side of the transversal in the same relative positions from the intersection points.
Two-column Proof A convincing argument using deductive reasoning written with statements and reasons aligned in columns
Alternate Exterior Angles Non-adjacent angles that lie on opposite sides of a transversl and outside the intersected lines.
Same-side Exterior Angles Angles that lie on the same side of a transversal and outside the intersected lines.
Flow proof A convincing argument using deductive reasoning the arrows show the logical connections between statements.
Acute Triangle A triangle whose largest angle is less than 90 degrees in size.
Right Triangle A triangle with a 90 degree angle.
Obtuse Triangle A triangle whose largest angle is more than 90 degrees in size.
Equiangular Triangle A figure with all equal angles.
Equilateral Triangle A figure with all equal sides.
Isosceles Triangle A triangle with two congruent sides.
Scalene Triangle A triangle with no congruent sides.
Exterior Angle of a Polygon An angle formed by a side and an extension of an adjacent side.
Remote Interior Angles Two angles that two nonadjacent interior angles corresponding to each exterior angle of a triangle.
Polygon A closed plane figure comprised of sides that intersect at their endpoints no two of which are collinear.
Convex Polygon A closed figure with diagonals on the inside.
Concave Polygon A closed figure with diagonals containing points on the outside of the polygon.
Regular Polygon A polygon that has equal sides and equal angles
Created by: mlacelle