# A quadrilateral with 4 right angles but with both side are not equal?

It is a rectangle

rectangle

### What is the name of the special quadrilateral that has the angles of 80 100 80 and 100?

A rhombus is a parallelogram with all its sides equal in length but none of its internal angles are right angles. If both pairs of opposite sides are of equal but different lengths then the quadrilateral is a simple parallelogram. If the two pairs of adjacent sides are of equal but different lengths then the shape is called a kite.

### Is a parallelogram symmetrical?

In short, yes. A parallelogram is a quadrilateral with opposite sides parallel (and therefore opposite angles equal). A quadrilateral with equal sides is called a rhombus, and a parallelogram whose angles are all right angles is called a rectangle. And, since a square is a degenerate case of a rectangle, both squares and rectangles are special types of parallelograms.

### Is a square a rhombus because?

A rhombus can be defined in 2 ways: # A quadrilateral with four equal sides, or # A qyuadrilateral with 4 equal sides but no right angles. Both definitions are used. If the definition used is the first of these then a square is a special case of a rhombus. But if it is the second definition then it is not.

### How many acute angles can be in a quadrilateral?

A quadrilateral can have 0 to 3 acute angles, but never 4: A rectangle and a square are both quadrilaterals with four right angles, hence they have no acute angles. A kite-shaped figure can have one acute and three obtuse angles, or three acute and one obtuse angles. A parallelogram and a rhombus have two acute and two obtuse angles. The sum of the interior angles of any quadrilateral is 360º; thus it would be…

### What Is a rectangle Is it sometimes a rhombus?

A rectangle is a form of quadrilateral parallelogram, where all angles are of ninety (90) degrees. A rhombus is a quadrilateral parallelogram where all sides are the same length. The only time when a rhombus is a rectangle and vice versa is when both side lengths and angles are equal, i.e. when the shape is a square.

### Has an isosceles triangle have an obtuse angle?

Not necessarily. The two equal angles in an isosceles triangle must both be acute angles. If they were right angles or obtuse angles then a triangle could not be formed. If the two equal angles are less than 45° each then the third angle is an obtuse angle. If they are both 45° then the third angle is a right angle and if they are both greater than 45° then the third angle is an…

### Is a quadrilateral a parallelogram if both pairs of opposite sides are equal?

Yes. Although the definition of a parallelogram is "a quadrilateral with both pairs of opposite sides parallel", the only way for a quadrilateral to include opposite sides of equal length is if the included angles are the same, and hence the sides are parallel. (Hint : draw a diagonal to a parallelogram. You can show that one of the two triangles formed is the mirror image of the other, which immmediately proves that each pair…

### Show you a quadrilateral with one set parallel lines and one right angle?

I don't think this is possible. there is not a quadrilateral with these qualities. If it is a quadrilateral, it will automatically have parallel lines, but there is not one that has both. The closest one would be the trapezoid, with a set of parallel lines, but no right angle. The square and rectangle have two sets of parallel lines and 4 right angles.

### How are a rectangle and a parallelogram different?

The main difference is that a rectangle has 4 equal interior right angles whereas a parallelogram has 2 equal interior obtuse angles and 2 equal interior acute angles Both have two sets of parallel lines, but a rectangle forms four equal 90 degree angles. A parallelogram does not have four equal angles.

### What does regular and irregular mean?

A regular polygon (a closed plane figure of straight lines) has all equal angles and all equal side lengths. For example, a square is a regular quadrilateral, because it's four edges are all the same length, and it's angles are all equal (90 degrees). A regular triangle is an equilateral triangle. An irregular polygon does not have equal sides and angles. N.B to be regular, a polygon must have both equal sides and equal angles…

### What do rectangles and squares have in common?

They both have four sides that meet at 90 degree angles. 1.Both are types of quadrilateral figures. 2.They have 4 right angles. 3.Diagonals are of equal length. 4.Opposite sides are equal. They both have angles. They both have straight lines. They are both polygons. They both have 2 dimensions. They are both planar. Their names both contain the letter a. Their names both contain the letter r. Their names both contain the letter e. Both…