HolcombMath

Tuesday, November 28, 2006

Geometry (Class 30)

Announcements
The assignment for this

Overview
§5.1 (p.264) Angle Bisectors
In this lesson we finish our proofs concerning perpendicular bisectors of a segment and then turn our focus to answering the question “How can we find the points that are equidistant from the sides of an angle.

Key Ideas
If a point is equidistant from the rays that form the sides of an angle, then the point is on the angle bisector of the angle.
If a point is on the angle bisector of an angle, then the point is equidistant from the sides of the angle.

Key Skills
Construct the angle bisector of an angle.
Determine if a point is one the angle bisector of an angle from information giving in a diagram.
Use Theorem 5.3 (Angle Bisector Theorem) and its converse to prove statements.
Apply the properties of an angle bisectors to find missing measurements.

Vocabulary
Angle Bisector
Equidistant

Handouts
Points Equidistant from the Sides of an Angle

Assignment
§5-2 (Txt. p.275) #8, 9, 14

§5-1 (Txt. p.268) #29, 44, 51