Question | Answer |
Adjacent Angles | Angles that share a vertex and a side but have no interior points in common |
Angle Bisector | A ray that divides an angle into angles of equal measure |
Midpoint | The point that divides the segment into two segments of equal length |
Perpendicular Bisector | Lines that intersect to form right angles |
Plane | A flat surface that extendsn indefinely in all directions |
Regular Polygon | A polygon with all the sides congruent and all the angles congruent |
Segment | Two endpoints and all the points of the line between endpoints |
Segment Bisector | A line, segment, or ray that goes through the midpoint of a segment |
Acute Angle | an angle with a measure between 0 and 90 degrees |
Acute triangle | Has 3 acute angles |
Angle | formed by 2 rays with a common endpoint called a vertex |
Arc | part of a circle |
Central angle | an angle whose vertex is the center of a circle that equals a sum of 360 degrees. |
Chord | a segment that has both endpoints on a circle |
Circle | the set of points in a plane that are all the same distance from a given point called the center |
Circle graph | a graph of data where the circle represents the whole |
Compass | a geometric tool used to draw circles or arcs |
Complementary angles | 2 angles that are complimentary if the sum of their measures is 90 degrees |
Congruent angles | angles thhat have all the same length |
congruent polygons | 2 polygons that are congruent if they have exactly the same shape and size |
Congruent sides | have the same length |
decagon | a polygon with 10 sides |
Diameter | a segment that passes through the center of a circle and has both endpoints |
Equilateral triangle | a triangle |
hexagon | a ploygon with 6 sides |
intersecting lines | 2 or more lines that cross each other |
irregular polygon | a plygon with sides that are not all congruent and/or angles that are not all congruent |
isosceles triangle | a triangle with at least two congruent sides |
Line | a series of points that extends in 2 opposite directions without end |
Midpoint | the point that divides the segment into two segments of equal length |
obtuse angle | an angle with a measure greater that 90 degrees and less than 180 degrees |
obtuse triangle | a triangle with an obtuse angle |
octagon | a ploygon with 8 sides |