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HAPPY TUESDAY! 11/21/12

HAPPY TUESDAY! 11/21/12. WARM UP : Find the area of each figure below. 1. 2 . 3 . Area = __________ Area = __________ Area = __________. TODAY’S AGENDA:.

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HAPPY TUESDAY! 11/21/12

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  1. HAPPY TUESDAY!11/21/12 WARM UP: Find the area of each figure below. 1. 2. 3. Area = __________ Area = __________ Area = __________

  2. TODAY’S AGENDA: Objective(s): SWBAT identify different types of polygons and determine their areas by answering 3 of 4 practice problems correctly on an exit slip. Agenda: 1. DO NOW: Area of Polygons (5) 2. Anticipatory Set: Polygon People (10) 3. Area Formulas of Polygons Notes (20) 4. Practice Problems (15) 5. Daily Self Rating (5) 6. Exit Slip (5)

  3. POLYGON PEOPLE! Penny and Peter are polygon people because they are made up of polygons. Name the shapes that each part of their body is made from:

  4. WHAT IS A POLYGON? POLYGON= 2-dimensional shape that is made up of straight lines and is “closed” (all lines connect) COLD CALL = What are polygons we have already learned about so far? ANSWER: TRIANGLES AND QUADRILATERALS (RECTANGLES, SQUARES); CIRCLES ARE NOT POLYGONS BECAUSE THEY ARE CURVED!

  5. FORMULAS FOR DIFFERENT QUADRILATERALS:

  6. USING FORMULA TO SOLVE AREA: TEACHER EXAMPLE: A1 = 9 A2 = 5 B1 = 10 B2 = 12 H = 7 WHAT TYPE OF POLYGON IS THIS: _____________ FORMULA = _______________ PRACTICE SOLVING FOR AREA AND PERIMETER ON YOUR HANDOUT (#1-9) TRAPEZOID AREA = (a2+a1)/2 x h

  7. WHAT ABOUT OTHER POLYGONS? You can find the area and perimeter of any type of REGULAR polygon using this formula: 6 4 5 3 8 7 9 10

  8. USING FORMULA TO SOLVE AREA: TEACHER EXAMPLE: A = 9 S = 5 WHAT TYPE OF POLYGON IS THIS: _____________ FORMULA = _______________ PRACTICE SOLVING FOR AREA AND PERIMETER ON YOUR HANDOUT (#1-6) HEXAGON AREA = ½ (A x S x N)

  9. EXIT SLIP 1. Remember to rate yourself on the work you did today in class on your daily rating sheet! 2. ANSWER THE 4 PRACTICE CAHSEE QUESTIONS ON THE LAST PAGE OF YOUR PACKET!

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