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# Unit 4 (math).

### unit4

Ray A part of a line that has no endpoint at the and extends without end in one direction.
angle a figure formed by 2 rays or lines.
Line Straight line that goes across.
Perpendicular Lines , line segments, or rays are perpendicular.
parallel two equal sides.
oblique Lines that's not parallel and not perpendicular.
intersect to cut or divide by passing through or across.
protracter a tool used to measure a angle.
Degree a unit or measureing angles.
right angle a 90% angle.
straight angle A line that goes on forever.
suppementary angles angles having a sun of 100 degrees
complementary angles angles have a sun of 90 degrees
opposite angle when two lines intersect, the angle form a opposite angle.
vertical angle pairs of opposite angles formed by intersecting lines are called vertical angles. Vertical angles have the same measure.
Polygon A figure bounded by straight lines.
congruent same size and shape.
isosceles triangle A triangle with two equal sides
Equilateral Refering to a polygon all of the sides are equal.
scalene triangle All of the sides diffrent lengths.
acute triangle A triangle that has all of the angles are acute
obtuse triangle A triangle thats one of the angles thats obtuse angle.
Right triangle A triangle with one right angle in it's indicator .
right trapezoid A quadrilateral with 2 parallel sides
circle a plane figure that forms a closed path so that all the points the path are the same distance from a point called the center.
reflex angle an angle greather than 180%
Created by: 10037046