A Tale of Three Intersecting Lines Class 7 Assertion and Reason Questions
mediumA Tale of Three Intersecting Lines Class 7 Assertion and Reason Questions
A Tale of Three Intersecting Lines Class 7 Assertion and Reason Questions
In each of the following questions, two statements have been given. One has been labelled as Assertion (A) and the other has been labelled as Reason (R). You have to choose the correct option, from the given four options.
(a) Both the statements (A) and (R) are correct and (R) is the correct explanation of (A).
(b) Both the statements (A) and (R) are correct but (R) is not the correct explanation of (A).
(c) (A) is correct but (R) is not correct.
(d) (R) is correct but (A) is not correct.
1. (A): If two angles of a triangle are 50° and 60°, then the third angle is 70°.
(R): Sum of the three angles of a triangle is 180°.
Answer:
(a) Both the statements (A) and (R) are correct and (R) is the correct explanation of (A).
2. (A): Sum of any two sides of a triangle is greater than the third side.
(R): Sum of any two angles of a triangle is greater than the third side.
Answer:
(c) (A) is correct but (R) is not correct.
3. (A): If an exterior angle of a triangle is 140° and its two interior opposite angles are equal, then each of these equal angles is 70°.
(R): An exterior angle of a triangle is greater than either of its interior opposite angles.
Answer:
(b) Both the statements (A) and (R) are correct but (R) is not the correct explanation of (A).
4. (A): If two angles of a triangle are 20° and 60°, then the triangle is an acute angled triangle.
(R): All angles of an acute angled triangle are acute angles.
Answer:
(d) (R) is correct but (A) is not correct.
5. (A): An equilateral triangle is an acute angled triangle.
(R): Each of the angles of an equilateral triangle is 60°.
Answer:
(a) Both the statements (A) and (R) are correct and (R) is the correct explanation of (A).