Q1 of 97 Page 205

Each question consists of two statements, namely, Assertion (A) and Reason (R). Please select the correct answer.











Assertion (A)



Reason (R)



Each angle of an equilateral triangle is 60°.



Angles opposite to equal sides of a triangle are equal.


We know that,

Each angle of an equilateral triangle is equal to 60o also angles opposite to equal sides of a triangle are equal to each other


∴ Both assertion and reason are true and reason is the correct explanation of the assertion


Hence, option (A) is correct

More from this chapter

All 97 →
15

In an isosceles ∆ABC, AB=AC and the bisectors of ∠B and ∠C intersect each other at O. Also, O and A are joined.

Prove that: (i) OB=OC (ii) ∠OAB=∠OAC


 16

Prove that, of all line segments that can be drawn to a given line, from a point, not lying on it, the perpendicular line segment is the shortest

 18

Each question consists of two statements, namely, Assertion (A) and Reason (R). Please select the correct answer.











Assertion (A)



Reason (R)



If AD is a median of ∆ABC, then AB+AC>2AD.




In a triangle the sum of two sides is greater than the third side.


 19

Math the following columns:























Column I



Column II



(a)In ∆ABC, if AB=AC and ∠A=70°, then ∠C=………..



(p) less



(b) The vertical angle of an isosceles triangle is 120°. Each base angle is………



(q) greater



(c) The sum of three medians of a triangle is ………… than the perimeter.



(r) 30°



(d) In a triangle, the sum of any two sides is always …….. than the third side.



(s) 55°



The correct answer is:


(a)-……, (b)-……, (c)-……., (d)-……