If you're only given the base, then you can't calculate the other leg.
If you have any one of the following, then you can calculate all of the
parts of the triangle:
-- length of the other leg
-- length of the hypotenuse
-- size of either acute angle
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David Beckham
The answer depends on what information you do have about it.
To locate the height of a non-right triangle, you may need to extend the base of a triangle. Then pick one corner and draw a line perpendicular to the extended base. This line you just drew is the height. Finding this height will depend on what triangle dimensions you are given, so the answer will vary. Note: the extended part does not count as the actual base. It is only used to help you find the height of a triangle.
The height has not been given but the area of the triangle is: 0.5*height*base
-- Imagine what you have if you slice the triangle in half along the height ...-- You have a right triangle. One side of it is 1/2 of the base, and one side isthe height.-- The slanting side is the hypotenuse of the right triangle, and knowing whatyou know about right triangles, you can calculate its length.-- Once you do that, you have the lengths of all three sides of the original triangle,and you can calculate the perimeter.