Home
Class 9
MATHS
Read the statements carefully and state ...

Read the statements carefully and state 'T' for true and 'F' for false.
(i) The line segment joining the mid-points of any two sides of a triangle is equal to third side.
(ii) Sum of adjacent angles of a parallelogram is 180^(@)`
(iii) If each pair of opposite angles of a quadrilateral are equal, then it is a parallelogram.

A

(i)-T, (ii)-F, (iii)- T

B

(i)-F, (ii)-F, (iii)-T

C

(i)-F, (ii)-T (iii)-T

D

(i)-T, (ii)-T, (iii)-F

Text Solution

AI Generated Solution

The correct Answer is:
To solve the question, we will evaluate each statement one by one and determine if they are true (T) or false (F). ### Step-by-Step Solution: 1. **Evaluate Statement (i):** - The statement says, "The line segment joining the mid-points of any two sides of a triangle is equal to the third side." - Let's consider a triangle ABC. Let P be the midpoint of side AB and Q be the midpoint of side AC. - The line segment PQ connects the midpoints of sides AB and AC. According to the Midpoint Theorem, PQ is parallel to side BC and is half its length, i.e., PQ = 1/2 BC. - Therefore, the statement is **False (F)**. 2. **Evaluate Statement (ii):** - The statement says, "Sum of adjacent angles of a parallelogram is 180°." - In a parallelogram, opposite angles are equal, and the sum of all angles in any quadrilateral is 360°. - If we denote the adjacent angles as x and y, we have: x + y + x + y = 360°, which simplifies to 2x + 2y = 360° or x + y = 180°. - Thus, the statement is **True (T)**. 3. **Evaluate Statement (iii):** - The statement says, "If each pair of opposite angles of a quadrilateral are equal, then it is a parallelogram." - For a quadrilateral to be a parallelogram, one of the conditions is that both pairs of opposite angles must be equal. - If angle A = angle C and angle B = angle D, then by the properties of quadrilaterals, the figure must be a parallelogram. - Therefore, this statement is also **True (T)**. ### Final Answers: - (i) F - (ii) T - (iii) T
Promotional Banner

Topper's Solved these Questions

  • QUADRILATERALS

    SCIENCE OLYMPIAD FOUNDATION |Exercise Achievers Section (HOTS)|3 Videos
  • PROBABILITY

    SCIENCE OLYMPIAD FOUNDATION |Exercise ACHIEVERS SECTION (HOTS) |3 Videos
  • SOF INTERNATIONAL MATHEMATICS OLYMPIAD

    SCIENCE OLYMPIAD FOUNDATION |Exercise ACHIEVERS SECTION|5 Videos

Similar Questions

Explore conceptually related problems

The line segment joining the mid-points of any two sides of a triangle is parallel to the third side of a triangle.

Theorem 8.3 : If each pair of opposite sides of a quadrilateral is equal, then it is a parallelogram.

Theorem 8.9 : The line segment joining the mid-points of two sides of a triangle is parallel to the third side.

Prove that the line segment joining the mid points of two sides of a triangle is parallel to its third side.

The line segment joining the mid-points of any two sides of a triangle in parallel to the third side and equal to half of it.

Prove analytically that the line segment joining the middle points of two sides of a triangle is equal to half of the third side.

Prove that the line segment joining the mid points of two side of a triangle is parallel to the third side and equal to half of it.

Theorem 8.5 : If in a quadrilateral, each pair of opposite angles is equal, then it is a parallelogram.

Show that the line segments joining the mid- points of opposite sides of a quadrilateral bisects each other.