MTH 114 Study Guide - Final Guide: Bisection, Equilateral Triangle, Isosceles Triangle
Document Summary
A ray from the vertex of an angle that divides the angle into two equal pieces. In the diagram, ray ab is the angle bisector of cad. If two straight lines intersect, they do so at a point. Those angles opposite each other are called vertical angles. Those angles sharing a common side and a common vertex are adjacent/supplementary angles. Two or more lines that cross each other at a point. That point would be on each of those lines. Two lines that meet to form right angles (90 ) The symbol is used to denote perpendicular lines. Two or more lines that remain the same distance apart at all times. The symbol || is used to denote parallel lines. A third line that cuts two parallel lines, forming two sets of four angles. Angles in the same relative positions have the same measures.