Geometry: (11-2) Area

elishevacarl, Apr 27, 2017


  • 1. Copy of Area of a Triangle (Discovery)
  • 2. Area of a Parallelogram (Discovery)
  • 3. Area of a Trapezoid (Discovery)
  • 4. Area of a Rhombus

1.

Copy of Area of a Triangle (Discovery)

[color=#000000]Interact with the applet below for a few minutes.  [br][br][i]Be sure to move the [/i][b]BIG BLACK VERTICES[/b] [i]of the triangle around each time [b]before you move the slider.  [/b][/i][/color]
Questions:
[color=#000000]1) What transformation(s) took place in the applet above?  [br]2) How does the area of the [/color][color=#f1c232][b]yellow triangle[/b][/color][color=#000000] compare with the area of the [/color][color=#ff00ff][b]pink triangle[/b][/color][color=#000000]?[br]3) What BIG FIGURE was formed each time the slider reached its end?  [br]4) Justify why your answer to (1) is correct.  [br]5) The[/color] [color=#ff00ff][b]original triangle[/b][/color] [color=#000000]makes up[/color] [b][color=#000000]what fractional part of BIGGER FIGURE FORMED?[/color][/b] [br][color=#000000]6) Write a formula for the area of the original triangle based on your answer to (5).  [/color]
– elishevacarl, Tim Brzezinski

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