A crossed rectangle is sometimes called an "angular eight". Give an alternative proof of the theorem using angle-chasing.
Their major role historically has been in the representation of physical concepts by vectors. Statement 2: Reason for statement 2: If same-side exterior angles are supplementary, then lines are parallel.
As a consequence of this result, the endpoints of any two diameters of a circle form a rectangle, because this quadrilateral has equal diagonals that bisect each other.
EKN and? Now, let's look at the properties that make rectangles a special type of parallelogram.
That is because a square has all the properties of a rectangle and rhombus. Also, we know that the diagonals of a square bisect pairs of opposite angles. In fact, because two angles of each triangle are congruent, we can say that?
In Parallelogram B, we see that there are four right angles and that the pairs of opposite sides are congruent. Similar to the definition of a rectangle, we could have used the word "parallelogram" instead of "quadrilateral" in our definition of rhombus.
We could have also said that a rectangle is a parallelogram with four right angles, since and quadrilateral with four right angles is also a parallelogram because their opposite sides would be parallel.
That is, they all have 1 opposite sides that are parallel, 2 opposite angles that are congruent, 3 opposite sides that are congruent, 4 consecutive angles that are supplementary, and 5 diagonals that bisect each other.
Answer: We know that ABCD is a rectangle, so let's use some rectangle properties to help us figure out what x is.