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Chapter 10

Chapter 10. 10.9 Right Triangles and Regular Polygons. REVIEW. Write out the three TRIG ratios: What is perimeter? What is Area? Area formula for a Triangle: What does regular polygon mean? (ch. 4). Regular _________________. Radius. Center. Apothem. Central Angle.

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Chapter 10

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  1. Chapter 10 10.9 Right Triangles and Regular Polygons

  2. REVIEW Write out the three TRIG ratios: What is perimeter? What is Area? Area formula for a Triangle: What does regular polygon mean? (ch. 4)

  3. Regular _________________ Radius Center . Apothem Central Angle 1. A segment whose endpoints are the center and a vertex 2. The point that is equidistant from all vertices 3. A segment that is a perpendicular bisector from the center to a side 4. The angle between two radii

  4. Central Angle Regular _______________ 360 # of angles

  5. Find the radius, apothem, and perimeter Regular _____________ each side is 12 in.

  6. Find the apothem and perimeter • Regular ____________ with the radius of 6 in.

  7. Area of a regular polygon Find the area of one triangle times the number of triangles OR Half the apothem times the perimeter (1/2 a p) 5 in 12 in

  8. Find the area Find the area of a regular hexagon given the perimeter is 108 cm

  9. Find the Area Given: Regular decagon and apothem is 20.

  10. Homework • Pg. 597-598 #2 - 24 even, 27, 28

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