1 / 21

5-Minute Check 1

A B C D. Over Lesson 11-4. Find the measure of all angles. 141 3x 54 2x . 5-Minute Check 1. Splash Screen. You found the area of rectangles. (PSSA Survivor).

prentice
Télécharger la présentation

5-Minute Check 1

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. A B C D Over Lesson 11-4 Find the measure of all angles. 141 3x 54 2x 5-Minute Check 1

  2. Splash Screen

  3. You found the area of rectangles. (PSSA Survivor) • Find areas of parallelograms and triangles. • Find areas of trapezoids. Then/Now

  4. base The base of a parallelogram or a triangle is any side of the figure from which we measure the height. The bases of a trapezoid are the parallel sides. • altitude A line segment that is perpendicular to the base of a figure with endpoints on the base and the side opposite that base. Often called the height. Vocabulary

  5. Concept A

  6. Find Areas of Parallelograms A. Find the area of the parallelogram. The base is 3 meters. The height is 3 meters. A = bh Area of a parallelogram A = 3 ● 3 Replace b with 3 and h with 3. A = 9 Multiply. Answer: The area is 9 square meters. Example 1 A

  7. Find Areas of Parallelograms B. Find the area of the parallelogram. EstimateA = 4 × 6 or 24 The base is 4.3 inches. The height is 6.2 inches. A = bh Area of a parallelogram A = 4.3 ● 6.2 Replace b with 4.3 and h with 6.2. A = 26.66 Multiply. Answer: The area is 26.66 square inches. This is close to the estimate. Example 1 B

  8. A B C D A. Find the area of the parallelogram. A. 6 cm2 B. 7 cm2 C. 12 cm2 D. 14 cm2 Example 1 CYP A

  9. A B C D B. Find the area of the parallelogram. A. 0.975 ft2 B. 1.95 ft2 C. 2.8 ft2 D. 5.6 ft2 Example 1 CYP B

  10. Concept B

  11. Find Areas of Triangles A. Find the area of the triangle. The base is 3 meters. The height is 4 meters. Area of a triangle Replace b with 3 and h with 4. Multiply 3 × 4 = 12. Simplify. Answer: The area of the triangle is 6 square meters. Example 2 A

  12. Estimate Find Areas of Triangles B.Find the area of the triangle. The base is 3.9 feet. The height is 6.4 feet. Area of a triangle Replace b with 3.9 and h with 6.4. Example 2 B

  13. Find Areas of Triangles Multiply 3.9 × 6.4. Simplify. Answer: The area of the triangle is 12.48 square feet. Check 12.48 ≈ 12 Example 2 B

  14. A B C D A. Find the area of the triangle. A. 180 in2 B. 90 in2 C. 27 in2 D. 13.5 in2 Example 2 CYP A

  15. A B C D B. Find the area of the triangle. A. 4.4 cm2 B. 8.8 cm2 C. 9.36 cm2 D. 18.72 cm2 Example 2 CYP B

  16. Concept C

  17. Estimate Find Areas of Trapezoids PLAYROOM The floor of a playroom is shaped like a trapezoid. Use the figure to find the area of the playroom. Example 3

  18. Find Areas of Trapezoids Area of a trapezoid Simplify inside parentheses. Example 3

  19. Answer: The area of the trapezoid is square meters. Check  Find Areas of Trapezoids Divide out the common factors. Simplify. Example 3

  20. A B C D Find the area of the trapezoid. A. 20 ft2 B. 30 ft2 C. 40 ft2 D. 60 ft2 Example 3 CYP

  21. End of the Lesson

More Related