# Diagonals of a Rectangle

A rectangle is a four-sided shape with two pairs of opposite, parallel sides. All rectangles have four right angles. The diagonals of a rectangle are the line segments that connect the opposite corners of the rectangle. In other words, the diagonals of a rectangle divide it into four equal parts.

The diagonals of a rectangle are perpendicular to each other. This means that they form two pairs of congruent angles. Each angle is 90 degrees. The diagonals of a rectangle also bisect each other. This means that they divide each other into two equal parts.

The length of the diagonals of a rectangle can be found using the Pythagorean theorem. This theorem states that in a right triangle, the square of the length of the hypotenuse is equal to the sum of the squares of the lengths of the other two sides. In a rectangle, the hypotenuse is always one of the diagonals. The other two sides are the lengths of the sides of the rectangle. Therefore, to find the length of a diagonal, we need to find the length of one side and one diagonal first.

Let’s say we have a rectangle with sides that measure 3 inches and 4 inches. We can use these measurements to find the length of one diagonal using the Pythagorean theorem. First, we need to square both 3 and 4 to get 9 and 16 respectively. Then, we need to add 9 + 16 to get 25. Finally, we need to take the square root of 25 to get 5 inches, which is our answer!

## Conclusion

A diagonal is a line segment that connects two non-adjacent vertices (corners) in a polygon (a shape with straight sides). In a rectangle, there are two diagonals that crisscross through its center and bisect (divide into two equal parts) both its length and width! These diagonals also form two pairs of congruent angles (45°). You can use Pythagorean theorem to determine their lengths if you know either side or one diagonal measurement in advance!

## FAQ

### What is a diagonals of a rectangle?

A rectangle is a four-sided shape with two pairs of opposite, parallel sides. All rectangles have four right angles. The diagonals of a rectangle are the line segments that connect the opposite corners of the rectangle. In other words, the diagonals of a rectangle divide it into four equal parts.

### How do you find the diagonal of a rectangle in geometry?

The diagonals of a rectangle can be found using the Pythagorean theorem. This theorem states that in a right triangle, the square of the length of the hypotenuse is equal to the sum of the squares of the lengths of the other two sides. In a rectangle, the hypotenuse is always one of the diagonals. The other two sides are the lengths of the sides of the rectangle. Therefore, to find the length of a diagonal, we need to find the length of one side and one diagonal first.

### How many diagonals have a rectangle?

A rectangle has two diagonals.