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Angle Measurements in Triangles

There are 16 videos in this category and 0 videos in 0 subcategories.

Category Videos
Not Right For WatchKnowLearn
Ages: 14 - 18
701 Views:
Incenter and Incircles of a Triangle - Khan Academy
From YouTube, produced by Salman Khan
Sal Khan, of Khan Academy, uses angle bisectors to find the incenter and incircle of a triangle in this eight-minute video.
October 12, 2011 at 09:13 PM
  • Favorites

Not Right For WatchKnowLearn
Ages: 15 - 18
699 Views:
Constructing the Incenter
From YouTube, produced by BrightStorm
This short, one-minute clip shows how to construct the incenter using a compass and straightedge.
October 12, 2011 at 09:17 PM
  • Favorites

Not Right For WatchKnowLearn
Ages: 15 - 18
298 Views:
Review of Triangle Properties - Khan Academy
From YouTube, produced by Salman Khan
In this ten-minute video clip, Sal Khan, of Khan Academy, compares perpendicular bisectors to angle bisectors to medians to altitudes in this review. (09:56)
October 20, 2011 at 10:08 PM
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Not Right For WatchKnowLearn
Ages: 14 - 18
185 Views:
Triangle Inequality Theorem - Khan Academy
From YouTube, produced by Salman Khan
Salman Khan offers his intuition behind the triangle inequality theorem during this six-minute video lesson.
December 24, 2012 at 11:54 AM
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Not Right For WatchKnowLearn
Ages: 12 - 18
1076 Views:
Angle Relationships and Types of Triangles
From YouTube, produced by bullcleo1
The instructor uses computer software to discuss vertical angles, exterior angles, alternate interior angles, etc. The sound quality could be a little better.
March 27, 2010 at 03:46 PM
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Not Right For WatchKnowLearn
Ages: 12 - 18
398 Views:
Finding the Measures of Angles In a Triangle
From YouTube, produced by yourteachermathhelp
The instructor uses a white board to demonstrate how to find the measures of angles of a triangle algebraically. (03:01)
July 8, 2009 at 06:33 AM
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Not Right For WatchKnowLearn
Ages: 10 - 14
983 Views:
Angle Game, Part 2 - Khan Academy
From YouTube, produced by Sal Khan
The instructor uses an electronic blackboard with different colors.  The angle game is explained and played using a star shape. Using information student knows about various angles they can figure out the sizes of the angle X.  Video can be stopped a... [more]
July 13, 2009 at 06:33 PM
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Not Right For WatchKnowLearn
Ages: 14 - 18
903 Views:
Angles in Triangles
From YouTube
In this TeacherTube video, the instructor shows how to find angle measurements. The writing on the instructors' white board is small, so viewers may want to open the video to 'full screen'. (04:12)
March 27, 2010 at 03:33 PM
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Not Right For WatchKnowLearn
Ages: 14 - 18
332 Views:
45-45-90 Triangle Side Ratios
From YouTube, produced by Sal Khan
In this six-minute video clip, Sal Khan shows the ratios of the sides of a 45-45-90 triangle are 1:1:sqrt (2).
October 5, 2011 at 08:09 PM
  • Favorites

Not Right For WatchKnowLearn
Ages: 15 - 18
293 Views:
Medians Divide into Smaller Triangles of Equal Area
From YouTube, produced by Sal Khan
Sal Khan shows that the three medians of a triangle divide it into six smaller triangles of equal area. There is a brief discussion of the centroid as well. (07:46)
October 17, 2011 at 06:43 PM
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