A rhombus satisfies this. Also a rectangle. And a square (which is both a rhombus and a rectangle). There may be others.
square,
It is always true that a parallelogram:is a four-sided shape (a quadrilateral)has opposite sides that are parallel to each other and of the same lengthhas opposite internal angles that equal one anotherhas diagonals that bisect one anotherhas a rotational symmetry of 2.
octagon
triangle
There are 275 diagonals in a shape with 25 sides. The formula is n*(n-3)/2
Trapezoid.
Only for a square or rhombus (diamond shape). The diagonals of a rectangle bisect each other, but are not perpendicular and do not bisect the opposite angles they join.
Rectangle
The diagonals of a rectangular shape will only bisect opposite angles if, in fact, the shape is a square. Otherwise they will not bisect them.
square,
A trapezoid Trapezoid - 2 congruent diagonals that do not bisect each other. No right angles and has 1 pair of opposite parallel sides.
A shape in which the diagonals bisect two of its angles is a rhombus. In a rhombus, the diagonals not only bisect the angles at the vertices but also are perpendicular to each other, dividing the rhombus into four right triangles. This property is specific to rhombuses and can also apply to squares, which are a special type of rhombus.
A shape with four sides and perpendicular diagonals is called a rhombus. In a rhombus, all sides are of equal length, and the diagonals bisect each other at right angles. Additionally, the diagonals are not necessarily of equal length, which distinguishes a rhombus from a square.
Star
In an arrowhead (or delta) shape, the diagonals do not bisect each other at their midpoints. Instead, one diagonal is typically longer and intersects the other at a point that is not the midpoint of either diagonal. Thus, while they do intersect, they do not bisect each other.
Because a rhombus is a regular four-sided shape.
No - only one of the diagonals bisects the angles of the shape.