Download 1.2 Poolroom Math

Poolroom Math
Objective: Students will be able to
measure angles and apply properties
to real world situations.
Angles
What is an angle? What makes an angle?
Formed by 2 rays with a common endpoint
Rays are called the sides of the angle
Common endpoint is called the vertex
Named by using 3 points on the angle, one point
on each side and the vertex, the point that
represents the vertex always has to be in the
middle or written second
Angle
A
side
vertex
B
ABC
C
side
Measure of an angle
You use a protractor to measure an angle –
different kinds different ways to do it
Angle measure is in degrees
Angle is always the shortest rotation between
the two sides about the vertex
Reflex measure is the largest rotation or the
angle subtracted from 360
Using a Protractor
2 different kinds in your boxes and some may
still have others
More Terms
Congruent Angles – have the same angle
measure, congruency markings
Angle Bisector – cuts an angle in half to have 2
congruent angles
These terms will be used a lot throughout the
year
Virtual Pool
Incoming Angle is the angle formed with the
path of the ball and the cushion (smaller of the
two angles)
Outgoing Angle is the angle formed by the
cushion and the path of the ball leaving ( smaller
angle)
Key idea here is the incoming angle and the
outgoing angle are congruent
Investigation
In your groups work on the Virtual Pool Math
problem
Answer the questions and work as a group
Objective: Students will be able to measure
angles and apply properties to real world
situations.
On a scale of 1 to 4 Do you fee we meet the
objective for the day.
If we did not meet the objective, what did we
miss and how could I improve.
Homework
Pg 42
1,7-10, 16 and 17, 31-34