Triangles have only three sides; all quadrilaterals, including parallelograms, have four.
A triangle is not a quadrilateral, but a parallelogram and trapezoid are.
It is neither because a triangle only has 3 sides whereas a parallelogram is a 4 sided quadrilateral
It is neither because a triangle is a 3 sided polygon whereas a parallelogram is a 4 sided quadrilateral
a triangle
triangle
no. a triangle is not a parallelogram. First of all, a parallelogram should be a quadrilateral, and quadrilateral forms are figures which has four sides. secondly' a parallelogram should have two pairs of parallel sides. a triangle doesn't even have a pair of parallel sides.
If you put two of ANY triangle hypotenuse to hypotenuse the shape will have 4 sides (thus a parallelogram or quadrilateral).
parallelogram
NO; by definition a parallelogram is a quadrilateral with two sets of parallel sides, while a triangle has 3 sides.
No. Every triangle has 3 sides, and every figure with 3 sides is a triangle. So no triangle can be a parallelogram. Every parallelogram has 4 sides, and every figure with 4 sides is a quadrilateral. So no parallelogram can be a triangle.
No because a parallelogram is a quadrilateral that has 4 sides but any triangle has only 3 sides.
A quadrilateral, in general, is not a parallelogram. If it is a parallelogram then you will have some additional information about its sides and angles. If you do not have such information it is not possible to prove that it is a parallelogram. Draw a diagonal which will divide the quadrilateral into two triangles and use the additional information that you have to show that the triangles are congruent. This can then be used to show equality of sides or of angles: the latter can then be used to show that sides are parallel. Note that the choice of which diagonal may influence how (if at all) you proceed.