The original shape that undergoes a motion or transformation Transformations that do not change the size or shape of a figure The perpendicular bisectors of a triangle intersect at a single point called the The angle bisectors of a triangle intersect at a single point called the The intersection point of the perpendicular bisectors of the sides of a triangle is the center of the _ circle of the triangleĪn _ circle is inside the triangle and just touches the three sidesĪ_ circle is outide the triangle and contains all three vertices The intersection of the angle bisectors of the angles of a triangle in the center of the _ circle of the triangle. The distances from a point on the angle bisector to the sides of the angle are The distances from a point on the perpendicular bisector to the endpoints of the segment are If two coplanar lines are perpendicular to the same line, then The point where a bisector intersects a segmentĪ bisector that is perpendicular to a segmentĪ line or ray that divides an angle into two congruent angles Two coplanar lines that do not intersecgtĪ line that divides a segment into two congruent parts Two lines that intersect to form a right angle Two angles whose measures have a sum of 180 degreesĪn angle whose measure is less than 90 degreesĪn angle whos measure is greater than 90 degrees and less than 180 degrees Two angles whose measures have a sum of 90 degrees If point R is between P and Q on a line, then PR+RQ=PQ If two angles are congruent, then they have the same measureĪ part of a line that begins at one point and ends at anotherĪ part of a line that starts at a point and extends indefinitely in one direction.Ī figure formed by two rays with a common endpoint. If two angles have the same measure, then they are congruent If two segments are congruent, then they have the same length. If two segments have the same length, then they are congruent. If two angles form a linear pair, then they are supplementary.
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