Download Opposite Rays: Two rays that share a common endpoint and form a

H. Geometry 1-4 and Angle Proofs Notes
August 26-27, 2016
Ray: Part of a line that has an
endpoint and extends indefinitely
in one direction.
Name Rays by the Endpoint First
Opposite Rays: Two rays that
share a common endpoint and
form a line.
H. Geometry 1-4 and Angle Proofs Notes
August 26-27, 2016
Angle: a figure formed by two
noncollinear rays that have a
common endpoint. The Rays are
called "Sides" of the angle. The
common endpoint is called the
"Vertex"
Naming
Angles
Symbol for
Angles:
H. Geometry 1-4 and Angle Proofs Notes
August 26-27, 2016
Interior:
S R
Exterior:
O P
What points are on the angle?
Q M and N
Measuring Angles: use protractor
The Unit is "degrees" the symbol
for degrees is o
4
1
2
H. Geometry 1-4 and Angle Proofs Notes
Angle Bisector: A Ray that divides
an angle into two congruent angles.
Example:
August 26-27, 2016
H. Geometry 1-4 and Angle Proofs Notes
Marking angles congruent:
August 26-27, 2016
H. Geometry 1-4 and Angle Proofs Notes
August 26-27, 2016
2 parts
Angle Addition Postulate:
maximum
at a time.
H. Geometry 1-4 and Angle Proofs Notes
Book 1-4: 12-29, 37-42
Angle Proof Activity #1
August 26-27, 2016