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Are all angles congruent in a quadrilateral or parallelogram or rectangle or rhombus or square?
Rectangle and square (which is a special kind of rectangle).
Why is every square also a rectangle?
A rectangle has four sides, in two pairs of equal length, and four angles, all of which are right angles. A square satisfies all of these requirements so a square is a rectangle. In adition, the two pairs of sides of a square are of equal length as well. That makes the square a very special kind of rectangle, but it is still a rectangle.
What parallelogram is not a rectangle?
Really, no parallelogram is a rectangle as it's slanted. A rectangle had four right angles with two sets of two sides that are the same. Yes, a square is a rectangle, but it's a special kind of rectangle. What I think you're talking about is a rhombus, or a parallelogram with four equal sides. it's basically a slanted square, but is not classified as a square.
When is a rhombus a rectagle?
A rhombus is a rectangle when one of its angles is a right angle.(Actually, a rectangle has 4 right angles. But you only have to prove that yourrhombus has one of them for sure, because then it turns out that it must havefour of them.)(Also, before you get all upset because a rhombus with right angles is actuallya square, we're aware of that too. Technically, a square is a special kind ofparallelogram, rhombus and rectangle too.)
What is the relationship of rectangle and a parallelogram?
A rectangle is a special kind of parallelogram ... one with right angles.
