Angles
right angle
an angle that is exactly 90 degrees.
obtuse angle
an angle that is greater than 90 degrees and less than 180 degrees.
straight angle
an angle that measures exactly 180 degrees.
acute angle
angles that are greater than 0 degrees and less than 90 degrees
Degree
An angle is measured in these units.
Isosceles Triangle
A triangle with 2 sides the same length and 2 equal angles.
Scalene Triangle
A triangle with 3 different side lengths
Equilateral Triangle
A triangle with 3 equal sides
Obtuse Triangle
A triangle with one angle greater than 90
Corresponding Angles
Equal angles on parallel lines.
Perpendicular Lines
Lines that intersect to form right angles.
parallel lines
Lines that never intersect(meet).
complementary angles
2 Angles that add up to 90 degrees.
supplementary angles
2 angles that up to 180 degrees.
Transversal
A line drawn through 2 or more parallel lines
Linear Pair
A pair of angles that are supplementary and adjacent.
vertex
A point where two or more rays meet. (A corner)
Acute Triangle
A triangle where each angle is less than 90.
Right Triangle
A triangle with one right angle.
Reflex Angle
An angle that's greater than 180 but less than 360
vertical angles
Angles opposite each other that are equal
Interior Same Side Angles
Angles that add up to 180 degrees. they make a U shape.
adjacent angles
Angles that share a common ray(side).
Alternate Interior Angles
Equal angles on parallel lines. They make a Z shape.
