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Mastering Polygon Angles and Areas - Step-by-Step Guide for Regular Polygons

Learn to calculate interior angles and areas of polygons with clear steps. Master regular pentagon area calculation and more. Table activity and homework included on pages 665 and 672.

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Mastering Polygon Angles and Areas - Step-by-Step Guide for Regular Polygons

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  1. Chapter 11.1 Angle Measures in Polygons

  2. Sum of the Measures of the Interior Angles of a Convex Polygon… (n-2) * 180

  3. Chapter 11.2 Areas of Regular Polygons

  4. The Measure of the Central Angle of a Regular Polygon: 1/n * 360 (n = the number of sides)

  5. Area Find the area of the regular pentagon. Step 1: Find the central angle. Step 2: Redraw the Triangle you are working with Step 3: Find the Apothem (use trig!) Step 4: Find the Perimeter (use trig!) Step 5: Use the Area formula for Regular Polygons

  6. Table Activity… then… HOMEWORK Pg. 665: 6-19, 22-25, 29-36 Pg. 672: 9-24

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