Download notation diagram 2. Defined terms a) half plane b) collinear points

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Aim #0: What are basic facts of geometry?
Do Now: Course Guidelines
CC Geometry H
notation
diagram
1. Undefined terms
A
A
or
B
p
2. Defined terms
a) half plane ____________________________________________________
b) collinear points ________________________________________________
B
A
C
D
c) coplanar points ________________________________________________
B
A
C
d) ray __________________________________________
__________________________________________
B
Name it:
______
A
e) opposite rays _________________________________________________
A
C
Name two opposite rays: _____ and _____
B
f) line segment _________________________________________________
_________________________________________________
A
B
Name the segment: _____ or _____
g) angle _______________________________________________________
C
A
B
Name the angle:
________
________
________
D
C
A
B
Name the 3 angles:
______
______
______
h) angle bisector
A
B
D
C
Name the angle bisector: ____
3. Two or More Angles
a) Adjacent angles ___________________________________
________________________________________________
1
2
• The sum of the measures of adjacent angles around a point is ____ .
0
• The sum of the measures of adjacent angles on one side of a line is ___.
0
1 2
4 3
1
2 3
b) Linear pair ______________________________________
______________________________________
1
2
c) Vertical angles ________________________________________
4
1
3
2
Name the vertical angles: ____ and ____
____ and ____
• Vertical angles are _____ in measure.
m≮__ = m≮__
m≮__ = m≮__
d) Complementary angles_________________________________________
e) Supplementary angles__________________________________________
• Two angles that form a linear pair are ____________________.
Exercises:
1. Must complementary or supplementary angles be adjacent? Explain.
2. Are vertical angles adjacent? Explain.
3. Find the measures of each labeled angle. Give a reason for your solution.
a
c
b
740
4. Find the measure of ≮d. State reasons based on the facts in #3 above that
explain your answer.
d
1150
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