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By: Alison & Kailey Table of Contents • • • • • • • • • • • • Point Line Segment Line Intersecting Lines Parallel Lines Perpendicular Lines Ray Acute Angle Obtuse Angle Right Angle Supplementary Angles Complimentary Angles • • • • • • • • • • • • Acute Triangle Obtuse Triangle Right Triangle Equilateral Triangle Isosceles Triangle Scalene Triangle Radius Diameter Circumference Chord Arc Sector Point Click Here to go back to the Table of Contents Point A A point has no length or width, it pin-points an exact location. Line Segment Click Here to go back to the Table of Contents A line segment doesn’t go on forever, but has two exact endpoints. Line Click Here to go back to the Table of Contents A line goes on forever in both directions and has no end points. Intersecting Lines Click Here to go back to the Table of Contents Point K Lines that intersect are used when lines, rays, line segments, or figures, share a common point. Parallel Lines Click Here to go back to the Table of Contents Two lines in the same direction that never intersect are called parallel lines. Perpendicular Lines Click Here to go back to the Table of Contents Point L When two lines cross vertically and horizontally and have no exact endpoints. Ray Click Here to go back to the Table of Contents Point C The point where the ray begins is its endpoint. Acute Angle Click Here to go back to the Table of Contents Point N An acute angle is an angle between 0 and 90 degrees. Obtuse Angle Click Here to go back to the Table of Contents Point T An obtuse angle is an angle between 90 and 180 degrees. Right Angle Click Here to go back to the Table of Contents A right angle is an angle measuring 90 degrees. Supplementary Angle Click Here to go back to the Table of Contents 90 degrees + 90 Degrees =180 Degrees Two angles are called supplementary angles if the sum of their degree measurements equals 180 degrees Complimentary Angles 35 degrees + 55 degrees = 90 degrees Click Here to go back to the Table of Contents Two angles are called Complimentary angles if their sum equals 90 degrees Acute Triangle Click Here to go back to the Table of Contents A triangle that has 3 acute angles. Obtuse Triangle Click Here to go back to the Table of Contents A triangle with an angle over 90 degrees. Right Triangle Click Here to go back to the Table of Contents A triangle that has one right angle. Equilateral Triangle Click Here to go back to the Table of Contents A triangle that has all sides congruent. Isosceles Triangle Click Here to go back to the Table of Contents A triangle that has only 2 sides congruent. Scalene Triangle Click Here to go back to the Table of Contents A triangle that has all sides different lengths are Scalene Triangles. Radius Click Here to go back to the Table of Contents A radius is the point in the middle of a circle. Diameter Click Here to go back to the Table of Contents The diameter is the space between the radius and the outside of a circle. Circumference Click Here to go back to the Table of Contents Circumference The perimeter of the circle. Chord Click Here to go back to the Table of Contents A K A straight line on a circle connecting one point to another. Arc Click Here to go back to the Table of Contents A K A part of a circle, named by its endpoints. Sector A B Click Here to go back to the Table of Contents A region enclosed by two radii and the arc joining their endpoints.