1 / 12

Area of a Trapezoid

Area of a Trapezoid. Minds On - Trapezoid. In your math notebook – Draw a picture of a trapezoid. Name two characteristics of a trapezoid. Definition of a Trapezoid.

ricky
Télécharger la présentation

Area of a Trapezoid

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 a Trapezoid

  2. Minds On - Trapezoid In your math notebook – Draw a picture of a trapezoid. Name two characteristics of a trapezoid

  3. Definition of a Trapezoid • A four sided shape with two parallel sides having the appearance of a triangle with a flattened top • A square with the top narrower than the bottom • A quadrilateral with exactly one pair of parallel sides. The parallel sides are the bases and the nonparallel sides are the legs. • It has 4 corners. It has 4 sides. The diagonal sides are the same length. The sides on the top and bottom are a different length.

  4. Picture of a Trapezoid

  5. Review of Shapes • Triangle A = ½ b × h • Parallelogram A = b × h

  6. Group Work • Wait until the teacher says ‘go’ • Divide yourself into groups of three • When teacher says ‘go’ move to a table with your group • Shortest person obtain a ruler and scissors for each group • Person with the ‘brightest’ top on be the recorder

  7. Calculate Area • Using the triangle sheet , construct a parallelogram and calculate area (using scissors and ruler). • Using the trapezoid sheet see if you can calculate the area of this shape (using scissors and ruler). • What is the formula ? • Can you show the area for the trapezoid in two different ways?

  8. Label the trapezoid . b1 h b2

  9. Area of two trapezoids (similar shape?) b1 b2 h b2 b1 A = h × (b1 + b2)

  10. Area of a trapezoid . b1 h b2 A = h × (b1 + b2) ÷ 2

  11. Home Activity • Text book page 165 ; Questions #9, #10, #14

  12. Ticket out the door Please complete and hand to teacher

More Related