math

• geometric figure formed by joining two rays at their endpoint

  angle
• whose measure is less than 90

  acute angle
• measures exactly 90

  right angle
• whose measure is greater than 90 but less than 180

  obtuse angle
• measure is exactly 180

  straight angle
• measure is more than 180 but less than 360

  reflex angle
• a line segment or a ray that bisects or divides an angle into two equal parts

  angle bisector
• the most basic building blocks of geometry

  which is represented as a dot and is named using capital letter

  point
• a straight arrangement of infinitely many points that extend indefinitely in both direction

  it does not have thickness and its lenght is infinite

  line
• two or more points that lie on the same line

  collinear
• a point that is outside the line

  non-collinear
• are lines in the same plane that never meet

  parallel
• are lines that meet at 90 angle

  perpendicular
• is a point at the exact middle of two other points and divides the segment into two equal parts

  midpoint
• a subset of a line which has one endpoint and continues one side

  ray
• a subset of a line which has two end points

  line segment
• are lines that intersect

  intersecting line
• has length and width, but no thickness

  it is represented as a flat surface

  plane
• two angle whose measure is 90

  complementary
• two angle whose sum of meausure is 180

  supplementary
• two angle that have the same measure

  congruent angle
• the line that divides the angle into two congruent

  angle bisector
• two angle that have the same vertex and common side between them

  adjacent angles
• type of congruent angle

  angle bisector

  congruent angle

  adjacent angle

  linear pair

  vertical angle
• a line that cuts acroos two or more line

  transversal
• angle between the two lines(inside)

  interior
• angle that are outside the two line

  exterior
• two angles on the same side of the transversal and on the same side of the parallel lines

  corresponding angles
• two angle between the two parallel lines and on the opposite side of the transversal

  alternate interior angles
• two angle out side the two parallel lines and on opposite side of the transversal

  alternate interior angle
• a closed figure bounded by straight line segment

  polygon
• right triangle


  is a triangle that contains a right angle
• obtuse triangle


  is the triangle that has an obtuse angle.
• is a triangle that has three acute angle

  acute triangle
• is a triangle that has no sides of equal length

  scalene triangle
• is a triangle that has two sides of equal length

  isosceles triangle
• the pair of the equal sides are called

  legs
• the third side is called the

  base
• is a triangle that has all three side of equal length

  equilateral triangle
• a polygon with four sides and angle

  quadrilateral