Wednesday, November 28, 2018

83, 89, 97..............the last 3 primes in 2 digits......2 adn 3 again......2 begin with a 8.........1828......in e......twice..........83 + 97 = 180........the number of degrees in any 2 d triangle................a triangle has 3 sides..........yet another...2, 3.......pattern.............a straight line also has 180 degrees......in the unit circle.....180 degrees is pi.........89 + 97 = 186..............like the speed of light........



Triangle
Solve for 
area
A
=
?
A
=
h
b
b
2


b
Base
h
b
Height
γcahbb
Unit Conversion:
Solution
A
=
h
b
b
2
=
?
·
?
2
=
?

Videos

5:30
Area of a triangle
(video)
Khan Academy
Khan Academy - Aug 15, 2016
1:31
Example finding
area of triangle
Khan Academy
YouTube - May 23, 2017
3:31
Area of a triangle
Math Meeting
YouTube - Jul 27, 2012
6:57
Area of a triangle
on a grid (video) |
Area
Khan Academy
Khan Academy - Aug 10, 2016
3:09
Triangle missing
side example
(video)
Khan Academy
Khan Academy - May 30, 2017
4:05
How to find the
area of a triangle.
MooMoo Math and Science
YouTube - Jul 29, 2012
10:23
Area of triangle
proof (video)
Khan Academy
Khan Academy - Aug 15, 2016
Intuition for why the area of a triangle is one half of base times height.
To find the area of a triangle, multiply the base by the height, and then divide by 2. The division by 2 comes from the fact that a parallelogram can be divided into 2 triangles. For example, in the diagram to the left, the area of each triangle is equal to one-half the area of the parallelogram.

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