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Definition I was taught: "A rectangle is a parallelogram with one right angle"

Sounds weird but when you think it out, having one right angle in a parallelogram means the other three must be right as well.

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Q: A rectangle is a parallelogram with what 4 sides angles?
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A rectangle is a parallelogram with how many sides?

All rectangles have 4 sides. All parallelograms have 4 sides. A rectangle is a parallelogram with all 4 angles of 90°


When can a parallelogram be a rectangle?

When all 4 corners are right angles. A parallelogram has two pairs of parallel sides. A rectangle has two pairs of parallel sides; therefore a rectangle is a parallelogram. A rectangle also has four 90° angles; a parallelogram does not necessarily have four 90° angles, therefore a parallelogram may, or may not, be a rectangle.


What is a parallelogram with 4 right angles but not 4 equal sides?

A rectangle.


What parallelogram has 4 right angles but not 4 equal sides?

It is a rectangle


When does a parallelogram become a rectangle?

A parallelogram is only a rectangle if it has 4 right angles. A square is a rectangle, but not vice versa because a square has all equal side lengths, four sides, AND four right angles. A rectangle has four right angles and 4 sides.


A parallelogram with 4 right angles and with sides different in length and width?

Well, honey, that's not a parallelogram, that's a rectangle. A parallelogram can have opposite sides equal in length and opposite angles equal in measure, but not necessarily right angles. So, in this case, you're describing a rectangle, not a parallelogram. But hey, at least you're on the right track!


A parallelogram with 4 congruent sides and 4 right angles?

A square.


What do you call a parallelogram that has 4 right angles?

A parallelogram with four right angles is a rectangle; if the rectangle also has four equal sides, then it is known as a square.


A rectangle with 4 right angles and all sides the same?

parallelogram


Parallelogram with 4 right angles and sides that are not the same length?

It is a rectangle.


What is a parallegram with 4 sides with 4 right angles?

Every parallelogram has 4 sides.If it has 4 right angles, then it's a rectangle.(Actually, a parallelogram with one right angle must be a rectangle.)


What is the name of a parallelogram with 4 right angles but not 4 equal sides?

It's a rectangle. A rectangle has four right angles, but only two pairs of equal sides.