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 *
To determine which line segment could be a midsegment of triangle ABC, look for the line segment that connects the midpoints of two sides of the triangle. The midsegment will be parallel to the third side and its length will be half that of the third side. If you have specific line segments to consider, check if they meet these criteria.
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