Basic Geometry Josey1jn

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Basic Geometry Josey1jn

  1. 1. Area and Perimeter Introduction to Geometry Jen Josey
  2. 2. Understanding Shapes
  3. 3. Types of Triangles <ul><li>Acute </li></ul><ul><li>Right </li></ul>Obtuse Isosceles
  4. 4. Perimeter <ul><li>The total distance around an object </li></ul><ul><li>Parallelogram </li></ul><ul><ul><li>P= 2b+2h </li></ul></ul><ul><li>Triangle </li></ul><ul><ul><li>P= a+b+c </li></ul></ul>
  5. 5. Area <ul><li>Number of square units an object consumes </li></ul><ul><li>Parallelogram </li></ul><ul><ul><li>A= b*h </li></ul></ul><ul><li>Triangle </li></ul><ul><ul><li>A= b*h </li></ul></ul><ul><ul><li>2 </li></ul></ul>
  6. 6. Finding Perimeter 5 6 <ul><li>P= 2b+2h </li></ul><ul><li>P= 2(6)+2(5) </li></ul><ul><li>P= 12+10 </li></ul><ul><li>P= 22 </li></ul>P= 2b+2h
  7. 7. How to Check Your Answer P= 22 1 2 3 4 5 6 22 7 21 8 20 9 19 10 18 11 17 16 15 14 13 12
  8. 8. Finding Area 5 6 A= b*h A= 6*5 A= 30 A=b*h
  9. 9. How to Check Your Answer 5 6 A= 30 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30
  10. 10. Find the Perimeter 6 3 ? P= a+b+c P= 6+3+c P= a+b+c
  11. 11. Method for Find c <ul><li>Pythagorean theorem </li></ul><ul><li>a 2 +b 2 =c 2 </li></ul><ul><li>6 2 +3 2 =c 2 </li></ul><ul><li>36+9=c 2 </li></ul>6.71=~c 45= c 2
  12. 12. Find the Perimeter 6 3 6.71 P= a+b+c P= 6+3+6.71 P= 15.71
  13. 13. Find the Area 6 3 A= b*h 2 A= b*h 2 A= 3*6 2 A= 18 2 A= 9
  14. 14. How to Check Your Answer <ul><li>Complete to a parallelogram </li></ul><ul><li>Find the whole area </li></ul><ul><li>Divide by 2 </li></ul>A=6*3 A=18 18/2 =9 6 3
  15. 15. Sources <ul><li>The Pythagorean Theorem </li></ul><ul><li>http://jwilson.coe.uga.edu/emt669/student.folders/morris.stephanie/emt.669/essay.1/pythagorean.html </li></ul>

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