If you mean an isosceles triangle then no because all triangles have no diagonals
No. The diagonals of a parallelogram are congruent if and only if the parallelogram is a rectangle.
A regular polygon.
your ball sack
Yes, in similar triangles, the angles are always congruent, and the sides have the same proportions to each other.
If you mean an isosceles triangle then no because all triangles have no diagonals
the diagonals of a trepazoid always congruent?
No. The diagonals are perpendicular, but they dont have to be congruent.
Yes. You can show this by SAS of two right triangles. Consider rectangle ABCD. AD and BC are the same length and AC and BD are the same length because opposite sides are congruent. The angles ADC and BCD are congruent since it is a rectangle and the angles are right angles. So the triangles ADC and BCD are congruent and their hypotenuses (the diagonals of the rectangles) are congruent.
Yes the diagonals of a square are always congruent. Their length is a*root 2 where a is the side of the square.
No. The diagonals of a parallelogram are congruent if and only if the parallelogram is a rectangle.
In a quadrilateral, the diagonals are only congruent for rectangles (or squares, which is a special kind of rectangle). Note: they are not congruent for a Rhombus.
Regular polygons. A square and rectangle will have congruent (equal length) diagonals.
Yes, it can always be divided in 2 triangles. This is because every quadrilateral has 2 diagonals. It is these diagonals that divide the quadrilateral into 2 triangles.
A square and a rectangle have diagonals of the same lengths.
Never
rectangle and parallelogram