1. Probability Lesson 3 Geometric Probability and the Addition Rule

2. The Standard  MCC9-12.S.CP.7 Apply the Addition Rule P{A or B)=P(A)+P(B)-P(A and B), and interpret the answer in terms of the model

3. Learning Target  I can use geometry or the addition rule to determine probabilities.

4. Vocabulary  Geometric probability- the probability of an event is based on a ratio of geometric measures such as length or area.

5. Models for geometric probability  There are three models for geometric probability:  Length  Angle measure  Area

6. Geometric Probability: Length.. A point is chosen at random on Find the probability that the point is on length

7. Geometric Probability : Length

8. Geometric Probability: Angle Measure

9.  3.Look at the example for angle measure. What is the probability that the pointer DOES land on white? ______________________  4.How is your answer to Exercise 3 related to the answer in the example? Why?

10. Geometric Probability: Area

11.  5.Look at the example for area. Find the probability that a point chosen randomly inside the rectangle is in the parallelogram. ______________________