By using a pair of compasses or depending on what type of triangle it is creating a perpendicular line from one of its vertices to its opposite side.
The base of the triangle equals (2x) the mid-segment, so.... 12/2 = 2x/2 6= x
connects two midpoints of a triangle
No.
I think it's called a vertice, and there are 3 vertices in a triangle. -- WRONGCORRECTION- it is NOT called a vertice. A vertice is each angle point, there ARE three vertices in a triangle but they the point of each angle.Now, a segment connecting the midpoints of two sides of a triangle is called a mid-segment. There are three mid-segments in a triangle.Go here for more info* http://regentsprep.org/Regents/math/geometry/GP10/MidLineL.htm *
That segment is known as a "side" of the triangle.
If a segment bisects one side of a triangle and is parallel to another side, it bisects the third side as well.
A trapezoid midsegment is parallel to the set of parallel lines in a trapezoid and is equal to the average of the lengths of the bases
hypotenuse
A segment that connects two midpoints of a polygon.
This would depend on if you use the segment's endpoints on the triangle with the vertex of the triangle to get the angle.
3
In normal metric spaces a line segment cannot have two mid points.