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READ THIS SLIDE FIRST(This is a hidden slide and will not appear in the slide show)<br />This presentation requires Micros...
How Big Is My Triangle?<br />Calculating the Area of a Triangle<br />
A triangle is one-half of a parallelogram.<br />The second triangle has been turned upside down.<br />When the second tria...
You know how to find the area of a parallelogram.<br />Height (h) = 4 in<br />Base × Height  (b × h) = Area<br />6 × 4 = 2...
If a triangle is half of a parallelogram, how do you think you find the area of a triangle?<br />Multiply base by height (...
So, how do you find the base and height of a triangle?<br />		A right triangle is easy<br />This isosceles triangle <br />...
What is the area of the triangle below?<br />Use the formula (b × h) ÷ 2<br />15 square inches<br />10 square inches<br />...
 Is the area of this triangle 8 square inches?<br />4 inches<br />4 inches<br />
Draw lines to show where you could measure the base and height of this triangle.<br />
If this triangle has the specified base and height, what is its area?<br />21 square inches<br />42 square inches<br />13½...
Draw lines to show where you could measure the base and height of this triangle.<br />
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Mouse Mischief - Triangle

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This presentation is designed to be customized and played using the Microsoft Mouse Mischief add-in for Microsoft PowerPoint 2010 or Microsoft Office PowerPoint 2007. To download Mouse Mischief click www.microsoft.com/mousemischief.

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Mouse Mischief - Triangle

  1. 1. READ THIS SLIDE FIRST(This is a hidden slide and will not appear in the slide show)<br />This presentation requires Microsoft Mouse Mischief. <br />Mouse Mischief lets students use computer mice to answer questions and participate in activities teachers create in PowerPoint presentations.<br />To learn more, visit www.microsoft.com/mousemischief<br />Get Microsoft Mouse Mischief<br />1<br />Download and Install <br />Download and install the Mouse Mischief add-in. Copy and pastewww.microsoft.com/mousemischiefinto your browser window to visit the site.<br />2<br />Restart PowerPoint<br />After installation is complete, restart PowerPoint. <br />3<br />Create<br />Use the Mouse Mischief features on the Multiple-Mouse tab.<br />4<br />Play Slide Show<br />To play a multiple-mouse slide show (such as this file), click the Play Slide Show button. <br />The Microsoft® Mouse Mischief™ add-in works with Microsoft® PowerPoint® 2010 or Microsoft® Office PowerPoint® 2007.<br />
  2. 2. How Big Is My Triangle?<br />Calculating the Area of a Triangle<br />
  3. 3. A triangle is one-half of a parallelogram.<br />The second triangle has been turned upside down.<br />When the second triangle is placed adjacent to the first one, the two triangles form a parallelogram.<br />1st triangle<br />2nd triangle<br />
  4. 4. You know how to find the area of a parallelogram.<br />Height (h) = 4 in<br />Base × Height (b × h) = Area<br />6 × 4 = 24 square inches<br />Base (b) = 6 in<br />
  5. 5. If a triangle is half of a parallelogram, how do you think you find the area of a triangle?<br />Multiply base by height (b × h)<br />Multiply base by height and divide by 2<br />(b × h) ÷ 2<br />Multiply base by height and multiply by 2<br />b × h × 2<br />
  6. 6. So, how do you find the base and height of a triangle?<br /> A right triangle is easy<br />This isosceles triangle <br />isn’t too hard<br />This scalene triangle can be <br />a little more challenging<br />height<br />base<br />height<br />base<br />height<br />base<br />
  7. 7. What is the area of the triangle below?<br />Use the formula (b × h) ÷ 2<br />15 square inches<br />10 square inches<br />5 in<br />7½ square inches<br />3 in<br />
  8. 8. Is the area of this triangle 8 square inches?<br />4 inches<br />4 inches<br />
  9. 9. Draw lines to show where you could measure the base and height of this triangle.<br />
  10. 10. If this triangle has the specified base and height, what is its area?<br />21 square inches<br />42 square inches<br />13½ squareinches<br />6 in<br />7 in<br />
  11. 11. Draw lines to show where you could measure the base and height of this triangle.<br />
  12. 12. If this triangle has the specified base and height, what is its area?<br />4½ square inches <br />18 square inches<br />9 in<br />9 square inches<br />2 in<br />

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