1, parallelogram hooks are set according to the instability of parallelogram, and the hook spacing can be changed as needed, which is beautiful and practical.
2. The electric telescopic door also adopts the instability of parallelogram.
3. Many floor tiles are parallelogram, with no gaps and overlaps on the ground and neat joints.
4. Using the characteristics of parallelogram easy to deform, stair handrails, folding chairs, courtyard bamboo fences, truck guardrails, hand-woven baskets, etc. All these take advantage of this feature.
Properties of parallelogram:
The characteristics of parallelogram are: the opposite sides are parallel and equal, the diagonals are equal and the adjacent angles are complementary, and the two diagonals are equally divided. Parallelogram is a common figure in life. In fact, the parallelogram belongs to the central symmetry figure. It has a central point, which is easy to find, that is, the overlapping point after diagonal crossing is its central point.
Another feature of parallelogram is that the straight line passing through the center point can be directly divided into two congruent shapes. There are rectangles, diamonds and squares. These are also parallelograms, but they are special shapes of parallelograms.