Question
Which of the given statements is NOT true?
- m∠1 + m∠2 = m∠4
- m∠1 + m∠2 + m∠3 = 180°
- m∠2 + m∠3 = m∠4
- m∠3 + m∠4 = 180°
Hint:
using the properties of angles of triangle check each and every option .
The correct answer is: m∠2 + m∠3 = m∠4
ANS :- Option C
Explanation :-
a. m∠1 + m∠2 = m∠4
(True ,Exterior angle is equals to sum of opposite interior angles)
b. m∠1 + m∠2 + m∠3 = 180°
(True , Sum of angles of the triangle is 180°)
c. m∠2 + m∠3 = m∠4
(False ) i.e NOT TRUE
d. m∠3 + m∠4 = 180°
(True, sum of angles on a straight line is 180°)
∴ Option C
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