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Yes. This is true because opposite angles are congruent and adjacent angles are supplementary.

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โˆ™ 2010-03-30 02:56:48
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A polynomial of degree zero is a constant term

The grouping method of factoring can still be used when only some of the terms share a common factor A True B False

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Q: If a parallelogram has one right angle then all of its angles must be right?
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What is the name of a parallelogram with only one right angle?

No parallelogram can have only one right angle. The consecutive angles of a parallelogram must be supplementary, meaning they must add up to 180. 180-90=90, so all the angles must be right angles.

What is a parallelogram with 1 right angle?

A parallelogram cannot have just one right angle. If it has one, all four of its angles must be right angles and so it must be a rectangle (or, as a special case, a square).

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.)

A rectangle is a parallelogram with what 4 sides angles?

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.

If a parallelogram has a right angle then it is a rectangle?

No because it could be a right angled trapezoid. A rectangle must have four right angles. Yes, a parallelogram with a right angle is always a rectangle. In fact, in my geometry book, some 55 years ago such was the definition of rectangle. A parallelogram with one right angle will always have four right angles. The right angled trapezoids that are not rectangles are not parallelograms.

A quadrilateral with one right angle must be a rectangle true or false?

FALSE because a rectangle has 4 right angles.

What is a parallelogram with 4 right angles called?

A rectangle, possibly a square. Can you see why a parallelogram must be a rectangle if any one of its angles is right?

Can a parallelogram have 2 right and 2 acute angles?

No, a paralleogram that has even one right angle must have all right angles in order to keep the opposite sides parallel. So, a parallelogram will have either no right angles (in which case it will always have 2 acute angles and two obtuse angles) or it will have 4 right angles (in which case it will be called a square or a rectangle, and will obviously have no acute or obtuse angles).

How many angles must measure 90 degrees in a parallelogram?

It is not a requirement that any of the angles are right angles (90 degrees), to qualify as a parallelogram.

Parallelograms are always rectangle?

Not all parallelograms are rectangles. A parallelogram is a shape with two parallel sides. Sometimes a parallelogram is a rhombus, trapezoid or a square.

A parallelogram must have in order to beclassified as a rectangle?

4 right angles

What angles make a right triangle?

One angle must be 90o, which is the right angle. The sum of the other two angles must equal 90o.

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