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If x is an obtuse angle, then what is true for x?(a) x = 90°(b) 180° < x < 360°(c) 0° < x < 90°(d) 90° < x < 180°This question was addressed to me during an interview for a job.The above asked question is from Lines and Angles Definitions and Basic Terms in division Lines and Angles of Mathematics – Class 9

Answer»

The correct option is (d) 90° < X < 180°

To ELABORATE: An obtuse angle always measures between 90° and 180°, therefore the value of an ACUTE angle is always between 90° and 180°. In the diagram given below, ∠PQR is an obtuse angle whose value is GREATER than 90° and LESS than 180°.



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