rectangle
A rectangle is a quadrilateral shape with four straight sides, where opposite sides are equal in length and all angles are right angles (90 degrees)
A rectangle is a quadrilateral shape with four straight sides, where opposite sides are equal in length and all angles are right angles (90 degrees). In a rectangle, the opposite sides are parallel to each other.
Properties of a Rectangle:
1. Opposite sides are equal in length: In a rectangle, the lengths of opposite sides are equal. For example, if one side of the rectangle measures 5 units, the opposite side will also measure 5 units.
2. All angles are right angles: In a rectangle, all four angles measure 90 degrees. This property makes the rectangle a special type of quadrilateral known as a “right rectangle”.
3. Diagonals are congruent: The diagonals of a rectangle are segments that connect opposite vertices. In a rectangle, the diagonals are always congruent, meaning they have the same length. The diagonals of a rectangle bisect each other, splitting the rectangle into two congruent right triangles.
4. Perimeter: The perimeter of a rectangle is the sum of all its side lengths. If the lengths of the sides of a rectangle are denoted as length (l) and width (w), the perimeter (P) can be calculated using the formula: P = 2(l + w).
5. Area: The area of a rectangle is the product of its length and width. It can be calculated using the formula: A = l × w, where A represents the area, l represents the length, and w represents the width of the rectangle.
Example:
Let’s consider a rectangle with a length of 6 units and a width of 4 units:
1. Opposite sides are equal in length: In this case, the opposite sides are 6 units and 4 units, which are not equal.
2. All angles are right angles: In the rectangle, all four angles measure 90 degrees.
3. Diagonals are congruent: The diagonals of this rectangle have not been defined yet.
4. Perimeter: The perimeter can be calculated as follows:
P = 2(l + w) = 2(6 + 4) = 2(10) = 20 units.
5. Area: The area can be calculated as follows:
A = l × w = 6 × 4 = 24 square units.
So, for this particular example, the rectangle does not satisfy the property of opposite sides being equal in length.
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