1 / 27

Area of regular polygons

Area of regular polygons. Section 10.3. Warm Up Find the unknown side lengths in each special right triangle. 1. a 30°-60°-90° triangle with hypotenuse 2 ft. 2. a 45°-45°-90° triangle with leg length 4 in. 3. a 30°-60°-90° triangle with longer leg length 3m.

stash
Télécharger la présentation

Area of regular polygons

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Area of regular polygons Section 10.3

  2. Warm Up Find the unknown side lengths in each special right triangle. 1. a 30°-60°-90° triangle with hypotenuse 2 ft 2. a 45°-45°-90° triangle with leg length 4 in. 3. a 30°-60°-90° triangle with longer leg length 3m

  3. A regularpolygon means that the polygon is convex and all sides AND angles are congruent. Area of any regular polygon is: A = A = Area P = Perimeter a = apothem

  4. In an equilateral triangle, the apothem is NOT half of the altitude. You can use either A = ½ P a or A = ½ b h

  5. Find the area of each regular polygon.

  6. Find the area of a regular octagon with perimeter of 72 in.

  7. Find the area of the regular pentagon with perimeter of 25 in.

  8. Find the area of a regular octagon with perimeter of 96 in.

  9. Find the area of the shaded region. Pentagon and triangle are regular.

  10. Find the area of the shaded region. A regular hexagon located in a square.

  11. The area of a regular octagon is 392.4 m2 an has an apothem length of 10.9m long. Find the length of each side. Find the perimeter of the octagon.

  12. Find the area of a square with apothem length of 5 cm.

  13. Find the area of the shaded region.

More Related