Ch 1.4.  Different kinds of angles.  Angle relationships and how they can be used to apply algebraic concepts.

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Presentation transcript:

Ch 1.4

 Different kinds of angles.  Angle relationships and how they can be used to apply algebraic concepts.

 An angle is made up of two rays that have the same endpoint.  Each ray is called a side and the common endpoint is called the vertex.

NName an angle with three letters or only the vertex when no other angles are present. TThe common endpoint of the two rays must be the middle letter.

 Zero:  Acute:  Right:  Obtuse:  Straight:

 Adjacent angles are two angles that share a common side.  The angle addition postulate requires that you have two adjacent angles.

 An angle bisector is a ray that divides an angle into two congruent angles.