1. Geometric Probability
M217 - Geometry

2. Refresh…
Probability - The chance that an event will occur (a # between 0 and 1).
Geometric Probability – Probability involving geometric measures, such as length or area.

3. Probability and Length
P(point K is on ) =
Length of A C D B

4. Probability and Area Area of M P(point K is in region M) = Area of J J

5. Example
F R E M D
Find the probability that a point K, selected randomly on , is on the given segment. 2.

6. Example 10 4 14 8
Find the probability that a randomly chosen point in the figure lies in the shaded region.

7. Example 12
Find the probability that a randomly chosen point in the figure lies in the shaded region.

8. Time problems
If you knew there was going to be a fire drill at some point during our school day, what is the probability that it happens before 3rd hour?
School Day: 7:30 AM – 2:45 PM
3rd hour 9:20 AM

9. Homework
WS 11.6A and 11.6B