10.2 Area of a Triangle

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10.2 Area of a Triangle

  1. 1. 10.2 Area of a Triangle Objective: Find the area of a  triangle. Mr. Williams   GESD    jwilliams@gesd40.org Image: 'Orange geometry or 3 triangles' www.flickr.com/photos/57949897@N00/414859701 1
  2. 2. Base of a triangle ­  the length of any one of the  triangles sides. Image: 'Staten Island Memorial' www.flickr.com/photos/91273409@N00/2158538468 2
  3. 3. Height of a Triangle ­    perpendicular distance  between the side whose  length is the base and vertex  opposite that side. Image: 'neon bordered triangle' www.flickr.com/photos/37996577120@N01/161974259 3
  4. 4. bh Area =  2 Height Height Base Base Image: 'Geodesic Afternoon' www.flickr.com/photos/36543076@N00/196759239 4
  5. 5. bh Area =  2 10 m 20 m Image: 'Geodesic Afternoon' www.flickr.com/photos/36543076@N00/196759239 5
  6. 6. bh Area =  2 10 ft 20 ft Image: 'Geodesic Afternoon' www.flickr.com/photos/36543076@N00/196759239 6
  7. 7. Find the area of the red figure. 3 m 8 m 10 m Image: 'Geodesic Afternoon' www.flickr.com/photos/36543076@N00/196759239 7

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