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Define the following terms:(i) Angle(ii) Interior of an angle(iii) Obtuse angle(iv) Reflex angle(v) Complementary angles(vi) Supplementary angles |
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Answer» (i) Angle – When two rays originate from the same end point, then an angle is formed. (ii) Interior of an angle – The interior of ∠BAC is the set of all points in its plane which lie on the same side of AB as C and also on the same side of AC as B. (iii) Obtuse angle – An angle whose measure is more than 90° but less than 180° is called an obtuse angle. (iv) Reflex angle – An angle whose measure is more than 180° but less than 360° is called a reflex angle. (v) Complementary angles – Two angles are said to be complementary, if the sum of their measure is 90°. (vi) Supplementary angles – Two angles are said to be supplementary if the sum of their measures is 180°. |
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