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17 terms

Absolutely Epic Geometry flash cards!

Supplementary angles
Two angles whose sum is 180 degrees.
EX: <ACB + <BCD = 60 + 120 = 180 degrees.
Complementary angles
Two angles whose sum is 90 degrees.
Acute angle
An angle less than 90 degrees but more than 0 degrees.
An exact location in space.
Obtuse angle
An angle whose measure is greater than 90 degrees, but less than 180 degrees.
A straight path that extends without end in opposite directions.
Right angle
An angle that measures 90 degrees.
(mathematics) a straight line extending from a point
(mathematics) an unbounded two-dimensional shape
Vertical angles
a pair of opposite congruent angles formed by intersecting lines
Parallel lines
coplanar lines that do not intersect
Perpendicular lines
Two lines that intersect to form right angles
Acute Triangle
a triangle whose interior angles are all acute
Obtuse Triangle
a triangle with one obtuse angle
Equilateral triangle
a triangle with three congruent sides
Isosceles triangle
a triangle with two congruent sides
Scalene triangle
a triangle with no two sides of equal length

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