Unit 2 - Angles of Geometry - Definitions Flashcards
Definition of Adjacent Angles
- Shares vertex, common ray & plane
- Next to each other
- Share no common interior points
Definition of Complementary Angles
The sum of two angles are 90 degrees.
Definition of Supplementary Angles
The sum of two angles are 180 degrees.
Definition of Linear Pair (3)
- Two adjacent angles
- Whose noncommon sides
- Are opposite rays
Definition of Transversal
A line that intersects with two or more coplanar lines.
Definition of Corresponding Angles (3)
- Non - Adjacent
- Same Side of Transversal
- One exterior and One Interior
Definition of Alternate Interior Angles (3)
- Non - Adjacent
- Interior Angles
- Lie on Opposite Sides of Transversal
Definition of Alternate Exterior Angles (3)
- Non - Adjacent
- Exterior Angles
- Lin on Opposite Side of Transversal
Definition of Consecutive Interior Angles (3)
- Non - Adjacent
- Interior Angles
- Lie on Same Side of Transversal
Definition of the Triangle Inequality Theorem
In order to form a triangle, the sum of any two sides of a triangle must be greater than or equal to the third side
Definition of the Exterior Angle Theorem (2)
- Sum of 2 interior angles
- Equal to non - adjacent exterior angle
Exteriror angle is the linear pair of the third interior angle, and since linear pairs and triangle sum equal to 180 degrees, when you subtract thaqt interior angle ffrom 180 degrees, the answer would equal to both exterior andlge and the sum of the other twi cingruent angles.