# Triangle

Triangle KLM is given by plane coordinates of vertices: K[-12, -11] L[-15, -18] M[-13, -12].

Calculate its area and itsinterior angles.

Result

S =  2
∠ K =  21.8 °
∠ L =  4.8 °
∠ M =  153.4 °

#### Solution:

Triangle KLM

Try calculation via our triangle calculator.

Leave us a comment of example and its solution (i.e. if it is still somewhat unclear...):

Math student
It's Great!. Am grateful.

1 year ago  1 Like
Math student
Still don't get it though

Math student
I find it hard ... But I think I will get there. ... Slowly but surely ...

#### To solve this example are needed these knowledge from mathematics:

For Basic calculations in analytic geometry is helpful line slope calculator. From coordinates of two points in the plane it calculate slope, normal and parametric line equation(s), slope, directional angle, direction vector, the length of segment, intersections the coordinate axes etc. Two vectors given by its magnitudes and by included angle can be added by our vector sum calculator. See also our trigonometric triangle calculator. Pythagorean theorem is the base for the right triangle calculator.

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