How do you prove each of the following properties of a parallelogram?

-Opposite sides of a parallelogram are congruent.

-Opposite angles of a parallelogram are congruent.

-The diagonals of a parallelogram bisect each other.

-If the diagonals of a quadrilateral bisect each other, then the quadrilateral is a parallelogram.

-Rectangles are special parallelograms with congruent diagonals.

Step-by-step explanation: you don’t need to cheat young one

point a is the center of the circle that passes through points e, f, and g and the center of the circle that passes through points x, y, and z.

the formula of a slope:

from a table we have

substitute:

the slope of f(x) is -1.

the graph of funcfion g(x) is a horizontal line. the slope of a horizontal line is equal 0. therefore the slope of g(x) is 0.

-1 < 0