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Thursday, March 1 st

Thursday, March 1 st. Warm-Up. Simplify What is the are of a parallelogram that has a base of 56 and a height of 24.5. What 3 D shapes has 12 edges?. Please complete warm-up And take out homework (Composite figures). Joke of the Day. What candy do you eat on the playground?

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Thursday, March 1 st

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  1. Thursday, March 1st Warm-Up Simplify What is the are of a parallelogram that has a base of 56 and a height of 24.5. What 3 D shapes has 12 edges? Please complete warm-up And take out homework (Composite figures)

  2. Joke of the Day What candy do you eat on the playground? “Recess” Pieces

  3. Polyhedron • A three dimensional figure in which all the surfaces are _____________

  4. A polyhedron that has two congruent, polygon shaped bases and other faces that are all ___________. Prism

  5. Pyramid A polyhedron with a polygon base and ____________ sides that all meet at a common vertex. Pyramid

  6. Think, Pair, Share • What is the difference between a base and face? • How do you name prisms and pyramids?

  7. The area of a figure is the amount of ___________ it covers. • We measure area in ________ units.

  8. Which Area formula matches the shape? 5. a=s² 1. a=1/2 bh 3. a=πr² 4. a=bh 2. a=lw

  9. Why does the Parallelogram Formulawork?

  10. You can divide any parallelogram into two congruent triangles. So the area of each triangle is half the area of the parallelogram. Height Height Base Base Why Does The Triangle Work?

  11. Whiteboard Review

  12. Draw a RADIUS

  13. Radius Center A line segment with one endpoint at the center of the circle and the other endpoint on the circle is a radius (plural: radii). It is half the diameter

  14. Draw a diameter

  15. Radius Center Diameter A diameteris a line segment that passes through the center of the circle and has both endpoints on the circle. The length of the diameter is twice the length of the radius.

  16. Draw a circumference

  17. Circumference Radius Center Diameter The distance around a circle is called the circumference.

  18. What is Pi

  19. Pi The ratio of the circumference to the diameter, , is the same for any circle. This ratio is represented by the Greek letter , which is read “pi.” =  C C d d

  20. What is the formula for circumference?

  21. The decimal representation of pi starts with 3.14159265 . . . and goes on forever without repeating. We estimate pi using 3 The formula for the circumference of a circle is C = d, or C = 2r.

  22. What is the formula for area of a circle

  23. A=πr²

  24. What is the formula for a rectangle?

  25. A=lw

  26. What is the formula for a parallelogram

  27. A=b x h

  28. What is the formula for area of a triangle

  29. A= ½ b x h

  30. If a rectangle has a width of 10 in and a length of 7 in. What is the area?

  31. 70 in²

  32. If a triangle has a height of 6 in. and a base of 4 in. What is the area?

  33. 12 in²

  34. Homework Answers

  35. Classwork Task #1: Floor Plan DUE END OF DAY FRIDAY Task #2: Interim study guide DUE MONDAY

  36. Composite Project Task #1 Answer questions 1-3 using the floor plan I gave you Task #2 On a SEPARATE SHEET OF PAPER create your own floor plan! Your floor plan must create and find the AREA of at least 4 rooms, 1 square room, 1 rectangle room, and 1 triangle room! Due Friday at the end of the day!

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