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How is a parallelogram different from a rhombus?
Technically, a rhombus is a parallelogram, but a parallelogram is not always a rhombus. A parallelogram is any four-sided shape with two sets of parallel lines. A rhombus is a parallelogram with all equivalent side lengths. So, a rhombus is a more specific parallelogram. (And so is a a square or a rectangle.)
Different condition that quarantees a quadrilateral a parallelogram?
A quadrilateral is "guaranteed" to be a parallelogram if (a) the opposite side are parallel, or (b) any line segment perpendicular to one side and intersecting the opposite side is also perpendicular to the opposite side, or (c) any line segment perpendicular to one side and intersecting the opposite side has the same length as any other such perpendicular line intersecting the opposite side (sometimes vaguely expressed as "opposite sides are everywhere equidistant"), or (d) the angles at the two ends of any side add up to 180 degrees.
How do you use two right angled triangles to make a parallelogram?
If they are congruent right angle triangles then just join them together side by side to form a parallelogram.
A parallelogram that is not a square?
A parallelogram that is not a square is any parallelogram whose angles are not ninety degrees or whose opposite sides are not equal.
The shortest distance from the base of a parallelogram to its opposite side?
Its height.
