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# 9.3 pythagorean theorem day 3

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### Transcript of "9.3 pythagorean theorem day 3"

1. 1. Let a and b represent the lengths of the legs of a right triangle, and let c represent the length of the hypotenuse. Find the unknown length. Lesson 9.4 , For use with pages 487-491 ANSWER 6 ANSWER 50 2. a = 14, b = 48 , c = ? 1. a = ? , b = 8 , c = 10
2. 2. Essential Questions <ul><li>What is the difference between an irrational number and a rational number? </li></ul><ul><li>How are real numbers and the Pythagorean Theorem used in everyday life? </li></ul><ul><li>What types of real-life situations could the Pythagorean Theorem or square roots apply to? Why? </li></ul>
3. 3. Darth Vader Lesson on Pythagorean Theorem <ul><li>Link </li></ul><ul><li>http://www.teachertube.com/viewVideo.php?video_id=46263&title=Darth_Vader_Explains_the_Pythagorean_Theorem </li></ul>
4. 4. Review <ul><li>Do these lengths make a right triangle? </li></ul><ul><li>25, 15, 20 </li></ul><ul><li>16, 18, 20 </li></ul><ul><li>9, 41, 36 </li></ul>
5. 5. Review <ul><li>Formulas </li></ul><ul><li>a 2 + b 2 = c 2 </li></ul><ul><li>c 2 - a 2 = b 2 </li></ul><ul><li>c 2 - b 2 = a 2 </li></ul>
6. 6. Review <ul><li>What two consecutive whole numbers does the square root fall between? </li></ul>
7. 7. Rational and Irrational numbers <ul><li>What is a rational number? </li></ul><ul><li>What is an irrational number? </li></ul>
8. 8. <ul><li>Rational Number </li></ul><ul><li>Fractions </li></ul><ul><li>Ratios </li></ul><ul><li>Whole numbers </li></ul><ul><li>Integers </li></ul><ul><li>Terminating decimals (stop) </li></ul><ul><li>Repeating decimals </li></ul><ul><li>Square root of a perfect square </li></ul><ul><li>Irrational Numbers </li></ul><ul><li>Non-terminating decimal </li></ul><ul><li>Non-repeating decimal </li></ul><ul><li>Square root of a number that is not a perfect square </li></ul>
9. 9. Homework <ul><li>Review Worksheet Pythagorean Theorem - Round to the nearest tenth! </li></ul><ul><li>Test tomorrow!!! </li></ul><ul><li>All late work due tomorrow!!!! </li></ul>
10. 10. Worksheet 9.3 <ul><li>65 </li></ul><ul><li>150 </li></ul><ul><li>117 </li></ul><ul><li>28 </li></ul><ul><li>13 </li></ul><ul><li>≈ 38.5 </li></ul><ul><li>35 </li></ul><ul><li>5 </li></ul><ul><li>8 </li></ul><ul><li>65 </li></ul><ul><li>48 </li></ul><ul><li>6.4 </li></ul><ul><li>85 </li></ul>15. ≈ 43.9 16. ≈ 7.4 ft 17. ≈ 657 miles or 656.9 miles 48 Points
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