# Quadrilaterals with perpendicular diagonals?

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**Question by: Dimitri Marchetti** | Last updated: September 20, 2021

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– the square has two perpendicular diagonals; the diagonals of the square, in addition to being perpendicular, are also congruent diagonals; … – a deltoid is a quadrilateral with two perpendicular diagonals; – every regular polygon with an even number of sides has at least one pair of perpendicular diagonals.

## Which quadrilaterals have the diagonals perpendicular to each other?

A rhombus has diagonals that are perpendicular to each other and angle bisectors. If a parallelogram has perpendicular diagonals, then it is a rhombus. If a parallelogram has a diagonal bisecting an angle, then it is a rhombus.

## Which parallelogram has perpendicular diagonals?

The rhombus is a parallelogram with congruent sides: its diagonals are perpendicular, they are bisectors of the angles and their meeting point is the center of the inscribed circumference.

## What is the formula for calculating the area of the quadrilaterals that have perpendicular diagonals?

So we can say that: The area of a quadrilateral with perpendicular diagonals is obtained by multiplying the measurements of its diagonals and dividing the product obtained by two.

## How do you find the perimeter of a quadrilateral with perpendicular diagonals?

Regular figures

If the quadrilateral is irregular to calculate the perimeter (P) all the sides must be added and the formula is P = a + b + c + d. While if the geometric figure is regular, that is, all sides are the same, the formula P = 4l is used.

## Find 26 related questions

### How do you find the diagonals of a quadrilateral?

For quadrilaterals inscribed in a circle, the famous Ptolemy theorem is valid: In a quadrilateral inscribed in a circle, the product of the measures of the diagonals is equal to the sum of the products of the measures of the opposite sides.

### How are the sides of a circumscribed quadrilateral calculated?

BC + DA. BC + DA = HA + BF + DH + FC. AB + DC = BC + DA. So we can conclude that a QUADRILATERAL can be CIRCUMSCRIBED to a circumference if the SUM OF THE OPPOSITE SIDES is EQUAL.

### Who has 4 axes of symmetry?

SQUARE: HAS 4 AXES OF SYMMETRY, TWO LIKE THE RHOMBUS AND TWO OTHER PERPENDICULARS AND THROUGH THE MIDDLE POINT OF THE SIDES.

### What is the name of the quadrilateral that has perpendicular diagonals two obtuse angles and two acute angles?

The rhombus has 2 acute and 2 obtuse angles. Diagonals: they have different lengths. Crossing, they cut in half and form 4 right angles (i.e. they are perpendicular to each other). Sides: Opposite sides are equal and parallel 2 by 2.

### What are perpendicular diagonals?

Perpendicular diagonals are two diagonals of a polygon that intersect forming four right angles, that is 90 ° wide angles. The diagonal of a polygon is a segment that joins two non-consecutive vertices of the polygon, that is, it is a segment that joins two vertices not belonging to the same side.

### How to prove that the diagonals of a rhombus are perpendicular?

in each rhombus the diagonals are perpendicular

they have: AO = OC because in a parallelogram the diagonal is divided in half AB = BC by hypothesis.

### Which parallelogram has 4 equal sides two perpendicular but not equal diagonals?

The square is a parallelogram having four congruent sides and four right angles. BCD diagonal side The square also has two diagonals, which are always perpendicular and congruent. Each side can act as a base, or as a height.

### In which figure do the diagonals cut in half?

Similarly, if segment BO and segment OD have the same length, it means that point O divides the diagonal BD in half exactly. This means that in each parallelogram the DIAGONALS are CUT in HALF.

### Which figure has the same diagonals?

The square is a particular type of rhombus which has all the angles congruent, and the two diagonals congruent.

### What is the name of the polygon that has 4 sides?

In geometry, the quadrilateral is a polygon with four sides and four vertices.

### What are the quadrilaterals with two axes of symmetry?

The rhombus has two axes of symmetry, as does the rectangle. The square is the one that has the greatest number of axes of symmetry: there are four!

### Which polygon has congruent opposite angles?

A quadrilateral is a parallelogram if and only if the two pairs of opposite internal angles consist of congruent angles. A quadrilateral is a parallelogram if and only if it has two parallel and congruent opposite sides.

### Which quadrilaterals have right angles?

The rectangle is a quadrilateral that has four right angles. DEFINITION. The rhombus is a parallelogram with four congruent sides.

### How many types of quadrilaterals are there?

Quadrilaterals by definition are polygons with four sides and four angles and are classified into 3 large families: generic quadrilaterals (also called scalene quadrilaterals), trapezius and deltoids.

### Which polygon has three axes of symmetry?

In an equilateral triangle, the heights, medians, bisectors and axes are equivalent to the three axes of symmetry.

### Which parallelogram has four axes of symmetry?

The square, therefore, has 4 axes of symmetry.

### Which lines are axes of symmetry?

There are two axes of symmetry of the rectangle, one vertical and one horizontal: the axis of vertical symmetry is the straight line passing through the midpoint of the base and parallel to the heights; the axis of horizontal symmetry is the straight line passing through the midpoint of one of the two heights and parallel to the base.

### When is a quadrilateral circumscribed to a circumference?

a quadrilateral can be circumscribed to a circumference if and only if the sum of two opposite sides is congruent to the sum of the other two.

### How to prove that a quadrilateral is inscribable?

To understand if a quadrilateral can be inscribed in a circumference, it is necessary to add the opposite angles. If the sum of their amplitudes gives 180 °, then the quadrilateral is inscribable.

### What is the property of quadrilaterals circumscribed to a circumference?

Theorem: The sum of two opposite sides of a quadrilateral circumscribed to a circumference is equal to the sum of the other two. … The vice versa of this theorem is also valid: If a quadrilateral has the sum of two opposite sides equal to the sum of the other two then it can be circumscribed to a circumference.

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