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GEOMETRY

GEOMETRY. What lies behind us and what lies before us are tiny matters compared to what lies within us. Ralph Waldo Emerson. Today: Over HW 11.2 Instruction Practice. 11.1 Angle Measures in Polygons.

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GEOMETRY

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  1. GEOMETRY What lies behind us and what lies before us are tiny matters compared to what lies within us. Ralph Waldo Emerson Today: • Over HW • 11.2 Instruction • Practice

  2. 11.1 Angle Measures in Polygons What lies behind us and what lies before us are tiny matters compared to what lies within us. Ralph Waldo Emerson Assignment: • 11.1 p 708 #1-7 odd and p 712 #1, 2, 12-16

  3. 11.2 Areas of Regular Polygons Objectives: • Find the area of a equilateral triangle • Find the area of a regular polygon Vocabulary: center, radius, and apothem of polygons, and central angles of regular polygons

  4. Find the area of a regular polygon apothem center Interior angles central angle radius

  5. Find the area of a regular polygon s 6 a

  6. Find the area of the regular figure. Find the area of a regular pentagon with perimeter of 90 meters. • Split into triangles. • Find the central angle. • Split triangle with apothem. • Find missing measure. • Calculate area.

  7. 11.2 Areas of Regular Polygons What lies behind us and what lies before us are tiny matters compared to what lies within us. Ralph Waldo Emerson Assignment: • 11.2 Half Sheet

  8. GEOMETRY What lies behind us and what lies before us are tiny matters compared to what lies within us. Ralph Waldo Emerson Today: • 11.2 Instruction Cont • Practice

  9. 11.2 Areas of Regular Polygons What lies behind us and what lies before us are tiny matters compared to what lies within us. Ralph Waldo Emerson Assignment: • 11.2 Half Sheet

  10. 11.2 Areas of Regular Polygons Objectives: • Find the area of a equilateral triangle • Find the area of a regular polygon Vocabulary: center, radius, and apothem of polygons, and central angles of regular polygons

  11. Find the area of the regular figure. Find the area of a regular octagon with a radius of 4 in. • Split into triangles. • Find the central angle. • Split triangles with apothem. • Find missing measure. • Calculate area.

  12. Find the area of the regular figure. Find the area of a regular nonagon with a perimeter of 54 in. • Split into triangles. • Find the central angle. • Draw in apothem. • Find missing measure. • Calculate area.

  13. Real World Application Your company is manufacturing the coaster to the right. If the diameter of the coaster is 8 cm, find how much of each fabriccolor you would need to make one coaster.

  14. 11.2 Areas of Regular Polygons What lies behind us and what lies before us are tiny matters compared to what lies within us. Ralph Waldo Emerson Assignment: • 11.2 Reading and Reteaching • Quiz 11.1-11.2 Wednesday

  15. GEOMETRY Every moment in planning saves 3 or 4 in execution. Crawford Greenwalt Today: • Scavenger Review • Practice

  16. 11.2 Areas of Regular Polygons What lies behind us and what lies before us are tiny matters compared to what lies within us. Ralph Waldo Emerson Assignment: • 11.2 Reading and Reteaching • Quiz 11.1-11.2 Wednesday

  17. 11.2 Areas of Regular Polygons Every moment in planning saves 3 or 4 in execution. Crawford Greenwalt Assignment: • Review 11.1-11.2 p 823 #1-25 EOO • Quiz 11.1-11.2 Wednesday

  18. GEOMETRY What lies behind us and what lies before us are tiny matters compared to what lies within us. Ralph Waldo Emerson Today: • PSAE • Over HW • Practice

  19. 11.2 Areas of Regular Polygons Every moment in planning saves 3 or 4 in execution. Crawford Greenwalt Assignment: • Review 11.1-11.2 p 823 #1-25 EOO • Quiz 11.1-11.2 Wednesday

  20. 11.2 Areas of Regular Polygons What lies behind us and what lies before us are tiny matters compared to what lies within us. Ralph Waldo Emerson Assignment: • 11.1-11.2 Review WS • Quiz 11.1-11.2 Wednesday

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