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# 9 6 A Notes

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• 1.  Do you remember...? Write the following formulas on your opener sheet. 1. Rectangle 2. Triangle 3. Parallelogram 4. Rhombus 5. Kite 6. Trapezoid 7. Circle 8. Regular Pentagon 1
• 2. Homework Questions: 2
• 3. 9.6 Geometric Probability How would you describe probability? What do you think geometric probability is? 3
• 4. 4
• 5. Examples: 1. What's the probability of choosing a point on BC? 2.What's the probability of choosing a point not on CD? 4 2 5 A B C D 3. What's the probability of choosing a point on AB and CD? 5
• 6. Examples continued: 4. Suppose two friends were each picking a number between one and 10. What is the probability that the second friend's choice was greater than the first? 5. What's the probability that the sum of the numbers chosen in the scenario above is less than or equal to 6? 6
• 7. Examples continued: 6. The radius of the yellow circle is 1 ft, the radius of the pink circle is 2 ft, and the radius of the green circle is 3 ft. Find the probability of hitting the yellow circle with a dart. 7. What's the probability of hitting the green circle, but not the pink or yellow? 7
• 8. 8
• 9. Example continued: 8. Find the probability of choosing a point within colored circles. 9. Find the probability of choosing a point within the square but outside the circles. 9
• 10. 10