Which quadrilaterals are opposite angles always congruent?

Answer 1

rectangle

Answer 2

(1) Parallelogram A parallelogram is a quadrilateral with two sets of parallel sides. The opposite or facing sides of a parallelogram are of equal length, and the opposite angles of a parallelogram are equal.


(2) Square
A square is a regular quadrilateral. This means that is has four equal sides and four equal angles.


(3) Rhombus
A rhombus is a quadrilateral whose four sides all have the same length. Opposite angles of a rhombus have equal measure. The two diagonals of a rhombus are perpendicular.


(4) Rectangle
A rectangle normally refers to a quadrilateral with four right angles.
Parallelogram

Square

Rhombus