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Today’s Objectives

~Geometry 2~. Mr. Field. Ms. Knoll. Mr. Williamson. Today’s Objectives. Module 19: Identify special right triangles Module 20: Area of regular polygons and circles and circle sectors. Ancient Babylonians. Right hand driving Systems of shared intersections One-way traffic circles

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Today’s Objectives

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  1. ~Geometry 2~ Mr. Field Ms. Knoll Mr. Williamson Today’s Objectives Module 19:Identify special right triangles Module 20: Area of regular polygons and circles and circle sectors Ancient Babylonians

  2. Right hand driving • Systems of shared intersections • One-way traffic circles • One-way streets • Traffic signs • Pavement marking • Regulations against jaywalking • Taxi stands • Off-street parking • Driver’s licenses • Vehicle registration • Traffic tickets

  3. Goal: find the area of the circle. Area of sector is 20mm 45°

  4. The perimeter is 20 cm. Find the area.

  5. The perimeter is 24 cm. Find the area.

  6. The perimeter is 20 cm. Find the area. (using triangles)

  7. Red= Blue= r ?

  8. Find the area given the circumference is 22mm

  9. Find the area given the circumference is 30mm

  10. Goal: find the area of the circle. Area of sector is 20mm 45°

  11. Goal: find the area of the circle. Area of sector is 44mm 20°

  12. ~Geometry 2~ Mr. Field Ms. Knoll Mr. Williamson Today’s Objectives Module 19:Identify special right triangles needed for Mr. Field’s presentation on circles Module 20: Area of regular polygons and circles and circle sectors William Phelps Eno

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