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Math Vocab

Angle Bisector A ray that divides an angle into of equal measure
Arc part of circle
Hexagon A polygon with 6 sides
Irregular polygon A polygon where the sides aren't congruent
line A series of points that extends in two opposite directions with out end
plane A flat surface that extends indefinately in all directions
isoceles triangle a polygon with 2 congruent sides
scalene triangle a triangle with no congruent sides
Acute angle An angle with a measure between 0 and 90
Acute triangle a triangle with three acute angles
adjacent angles angles that share a vertex and a side but have no interior points in common
angle an angle is formed by two rays with a common endpoint called a vertex
central circle an angle whose vertex is the center of a circle
chord a segment that has both endpoints in the 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 entire circle represents a whole. Each wedge, sector, represents part of a whole
compass a geometric tool used to make circles or arcs
complementary angles Two angles are complementary if the sum of their measures is 90
congruent angles angles that have the same measure
congruent sides 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 enpoints on the circle
equalateral triangle a triangle with three congruent sides
intersecting lines two lines that cross each other
midpoint the midpoint of a segment is the point that divides the segment into two segments of equal length
obtuse angle an angle with a measure greater than 90
obtuse triangle a triangle with one obtuse angle
octagon a polygon with 8 sides
parallel lines lines in the same plane that never intersect
parallelogram a quadrilateral with both pairs of opposite sides parallel
pentagon a polygon with 5 sides
perpendicular bisector a segment bisector that is perpindicular to the segment
perpendicular lines lines that intersect to form a right angle
point a location that has no size
Created by: ItzelS28