The longest side of a triangle is opposite its biggest angle.
You need the measures of two sides and for the triangle to be a right triangle to figure out the third side.
the unknown measurement of a side of a triangle
It depends on what information is available about the other sides and/or angles.
There is not such thing as a three-dimensional triangle. You are thinking of a tetrahedron which is a three-dimensional figure with each side being a triangle. This has four vertices.
The longest side of a triangle is opposite its biggest angle.
It has to be 45 degrees.
You need the measures of two sides and for the triangle to be a right triangle to figure out the third side.
The hypotenuse is the largest side of a right angle triangle
the unknown measurement of a side of a triangle
The face of a triangle is the flat surface of the solid figure. _________________________________________________ A face is a side of a 3 dimensional figure. So, the number of faces a triangle would be 0.
it can help you find the unknown length on one side of a triangle
Trigonometry and Pythagoras' theorem
subtract the two sides that you know from the perimeter to get the unknown side.
It depends on what information is available about the other sides and/or angles.
If one side of an isoceles triangle has a measure of 12.1, then either... 1. One of the other sides is also 12.1. ...or... 2. The other two side as equal to each other but not equal to the known side. In both cases, the unknown side(s) are unknown, because the angles are not stated.
yes, a triangle is a closed figure