4Q MATH REVIEWER - PT

• Geometry


  Branch of mathematics that studies the relation of points, lines, and planes and other figures in space
• Point


  Usually represented as a dot, has no thickness, depth, length, width, height, or dimension
• Line


  Straight mark with two arrow heads, straight, connecting at least 2 points, infinite length, no width and thickness
• Line Segment


  Part of a line that is bounded by two distinct end points
• Ray


  Starts at a point and infinitely extends on the other side
• Opposite Rays


  Rays that extend on opposite sides
• Plane


  Flat, 2D, can extend in all directions
• Collinear Points


  Points that lie on the same line
• Non-Collinear Points


  Points are not on the same line
• Coplanar Points


  Points in the same plane
• Non-Coplanar Points


  Points not in the same plane
• Intersecting Lines


  Two lines with a common Point
• Perpendicular Lines


  Lines intersecting at a right angle
• Concurrent Lines


  Three or more intersecting lines
• Parallel Lines


  Do not intersect
• Parallel Planes


  Planes that have no common point
• Skew Lines


  2 lines that are non-coplanar
• Intersecting Planes


  Planes that intersect in a line
• Congruent


  Two segments that have the same measure
• Angle


  Formed by two non collinear rays called SIDES, has an initial ray, terminal ray, and vertex
• Acute Angle


  Less than 90°
• Right Angle


  Exactly 90°
• Obtuse Angle


  More than 90° but less than 180°
• Straight Angle


  Exactly 180°
• Reflex Angle


  More than 180° but less than 360°
• Complete/Revolution Angle


  Exactly 360°
• Complementary Angles


  The pair that have the measurements that sum up to 90°
• Supplementary Angles


  The pair that have the measurements that sum up to 180°
• Linear Pair


  Two ADJACENT supplementary Angles
• Vertical Angles


  Two angles whose sides form two pairs of opposite rays, congruent
• Parallel Lines


  Coplanar lines that don't intersect
• Transversal


  A line that intersects two or more lines at different points
• Corresponding Angles


  Pairs of non-adjacent interior-exterior angles on the same side of a transversal
• Alternate Interior Angles


  Pairs of non-adjacent interior angles on opposite sides
• Alternate Exterior Angles


  Pairs of non-adjacent exterior angles in opposite sides
• Same-side interior angles


  Pairs of interior angles on the same side
• Same-side Exterior Angles


  Pairs of exterior angles on the same side
• Polygon


  Shapes made of straight lines
• Side


  Number of lines represented as (n)
• Vertex


  Each corner of the polygon where two lines intersect