Yup,
square and a rectangle
There are instances that quadrilateral angles can be consecutive and opposite angles are congruent. The best examples are square and rectangle.
In a rectangle, all the opposite sides, and angles are congruent to each other. All 4 angles of the rectangle, are right angles.
rectangle
Four right angles; opposite sides are parallel; opposite sides are congruent; diagonals are congruent.
square and a rectangle
Square and Rectangle
no
rectangle
There are instances that quadrilateral angles can be consecutive and opposite angles are congruent. The best examples are square and rectangle.
No "if" is necessary in this case. All angles of a rectangle are congruent, by definition. Also, there is no "angle opposite a side" in a rectangle.
It is a rectangle.
In a rectangle, all the opposite sides, and angles are congruent to each other. All 4 angles of the rectangle, are right angles.
rectangle
rectangle and square
How about a square or a rectangle
Four right angles; opposite sides are parallel; opposite sides are congruent; diagonals are congruent.