![]() Reflexive Property: everything is congruent to itself. Supplementary angles: two angles whose sum equals 180Ĭonjecture: a mathematical statement that isn’t proven Linear pair of angles: two angles that share a side and whose sum equals 180Ĭomplementary angles: two angles who create a right triangle ![]() Hypothesis: the if part of an “if-then” statement Lemma: a previously proven mathematical statement used to prove another mathematical statementĬorollary: a theorem that fallows another theorem Proof: a set of justified steps that validate a mathematical statement Theorem: a mathematical statement that can be proven Radius: the length from any point on the perimeter of a circle and its center.Ĭircumference: the length of the perimeter of a circle Transversal: a line that intersects two other linesĪlternate Interior/Exterior Angles: an angles corresponding vertical angle on the other parallel line when two parallel lines are intersected by a transversal lineĬircle: an infinite set of points that are equidistant from a single point Parallel Lines: two lines that never touch Perpendicular Lines: two lines that share only one point and that form four right angles Scalene Triangle: a polygon of three sides where none of the interior angles are congruent Isosceles Triangle: a polygon of three sides where two of the sides are congruent Vertical Angles: opposite angles of two lines that only share one pointĮquilateral Triangle: a polygon of three sides where all of the interior angles are congruent Obtuse Triangle: a polygon of three sides where one of the interior angles is greater than a right angle Right Triangle: a polygon of three sides that contains a right angleĪcute Triangle: a polygon of three sides where all interior angles are smaller than a right angle Obtuse Angle: an angle greater than a right angle Right Angle: an angle that is congruent to its supplementary angleĪcute Angle: an angle that is less than a right angle Then the length of the line segment PQ is the distance from P to L.Īngle: the figure formed by two rays who share a common end point ![]() The distance from a point P to a line L is defined by first finding the line that is perpendicular to L through the Point P and Q be the intersection of this line with L. ![]() Primitives: Line, Point, and Congruent, Contains or lies on, will remain undefined. ![]()
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