rectangles and squares
It depends on what you mean by bisect. All rectangles have diagonals that bisect the other one. Only certain rectangles (Squares) have diagonals that bisect its vertex, the ninety degree angle.
Parallelograms (including rectangles and squares)
parallelogram * * * * * Not true. Rectangles and squares do, but other parallelograms do not.
Circles have diameters, rectangles have diagonals.
rectangles and squares
Isosceles trapezoids, squares, and rectangles.
Squares, Rectangles, and Rhombuses.
It depends on what you mean by bisect. All rectangles have diagonals that bisect the other one. Only certain rectangles (Squares) have diagonals that bisect its vertex, the ninety degree angle.
Rectangles, Squares, and Isosceles Trapeziods.
Most quadrilaterals will not have congruent diagonals: rectangles (incl squares) and isosceles trapezium are the exception.
Parallelograms (including rectangles and squares)
parallelogram * * * * * Not true. Rectangles and squares do, but other parallelograms do not.
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.
This is true in squares and rectangles.
squares,rectangles,regular pentagons
yes if it is a square. squares are rectangles with their 4 sides and 4 right angles, but rectangles are not squares without 4 equal sides