1 / 13

GEOMETRY: Chapter 11

GEOMETRY: Chapter 11. 11.2 Areas of Regular Polygons. Postulate 24: Area of a Square Postulate The area of a square is the square of the length of its side. A = s 2. Postulate 25: Area Congruence Postulate If two polygons are congruent, then they have the same area.

aislinn-cremin
Download Presentation

GEOMETRY: Chapter 11

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. GEOMETRY: Chapter 11 11.2 Areas of Regular Polygons

  2. Postulate 24:Area of a Square Postulate The area of a square is the square of the length of its side. A =s2

  3. Postulate 25: Area Congruence Postulate If two polygons are congruent, then they have the same area. Postulate 26: Area Addition Postulate The area of a region is the sum of the areas of its nonoverlapping parts.

  4. Theorem 11.1:Area of a Rectangle The area of a rectangle is the product of its base and height. A =bh h b

  5. Theorem 11.2:Area of a Parallelogram The area of a parallelogram is the product of a base and its corresponding height. Images taken from: Geometry. McDougal Littell: Boston, 2007. P. 721.

  6. Theorem 11.3:Area of a Triangle The area of a triangle is one half the product of a base and its corresponding height. Images taken from: Geometry. McDougal Littell: Boston, 2007. P. 721.

  7. Ex. 1. Find the area of the parallelogram RSTU. Images taken from: Geometry. McDougal Littell: Boston, 2007. P. 721.

  8. Ex. 1. Find the area of the parallelogram RSTU. Answer: 700 square units Images taken from: Geometry. McDougal Littell: Boston, 2007. P. 721.

  9. Ex. 2. The base of a triangle is one half the height. The area of the triangle is 64 square centimeters. Find the base and height.

  10. Ex. 2. The base of a triangle is one half the height. The area of the triangle is 64 square centimeters. Find the base and height. Answer: 8 cm; 16cm

  11. Ex. 3 You need to buy paint so you can cover the back of an A-frame house and the top of a deck. A gallon of paint covers 275 square feet. How many gallons should you buy. Images taken from: Geometry. McDougal Littell: Boston, 2007. P. 722.

  12. Ex. 3 You need to buy paint so you can cover the back of an A-frame house and the top of a deck. A gallon of paint covers 275 square feet. How many gallons should you buy. Answer: 3 gal Images taken from: Geometry. McDougal Littell: Boston, 2007. P. 722.

  13. 11.2, p. 723, #1, 3-8 all, 12-18all, 23-27 odds (16 questions)

More Related