
Each angle of a Rectangle is a right angle.
State whether the above statement is true or false.
(A) True
(B) False
Answer
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Hint: In this question we are asked about the property of a rectangle that is if each angle of a rectangle is a right angle or not. For approaching such kinds of questions, we need to first keep in mind the definition and properties of quadrilaterals, which tells us that the sum of all internal angles of a quadrilateral is degrees, so we will find the value of each internal angle of the rectangle. And then we will see if each of its angles is right or not.
Complete step by step answer:
We are given a statement that each angle of a rectangle is a right angle, and we are asked if the statement is true or false. So, we know that a rectangle is a quadrilateral in which opposite sides are of equal length, and all the four angles are equal.
Now, let us consider a rectangle ,as shown in the figure below.
As per the definition of rectangle, we have and
And
But we know that is a quadrilateral and the sum of all interior angles of a quadrilateral is degrees. Thus, we have,
Hence, we can write
Thus, we now know that all four angles of a rectangle are equal to degrees, or a right angle.
Hence, the given statement that each angle of a rectangle is a right angle is true. So, the correct answer is option (A).
Note:
A quadrilateral is a polygon that has four sides. The diagonal of a quadrilateral divides it into two triangles, as we know the sum of all interior angles of a triangle is degrees, the sum of all interior angles of a quadrilateral is degrees. As the rectangle also has sides, it is a type of quadrilateral and thus follows the quadrilateral angle sum property. That’s why the sum of all the angles in a rectangle is equal to degrees.
Complete step by step answer:
We are given a statement that each angle of a rectangle is a right angle, and we are asked if the statement is true or false. So, we know that a rectangle is a quadrilateral in which opposite sides are of equal length, and all the four angles are equal.
Now, let us consider a rectangle

As per the definition of rectangle, we have
And
But we know that
Hence, we can write
Thus, we now know that all four angles of a rectangle are equal to
Hence, the given statement that each angle of a rectangle is a right angle is true. So, the correct answer is option (A).
Note:
A quadrilateral is a polygon that has four sides. The diagonal of a quadrilateral divides it into two triangles, as we know the sum of all interior angles of a triangle is
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