Classify the given angles into acute,right,obtuse,straight and reflex angle.
(a) $78 °$ (b) $124 °$ (c) $65 °$ (d) $190 °$ (e) $358 °$ (f) $90 °$ (g) $180 °$ (h) $288 °$

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Solution

Acute angle - Angles, measure of less than $90 °$ is called acute angle. Right angle - Angles ,measure of $90 °$ is called right angle. Obtuse angle - Angles, measure of greater than $90 °$ and less than $180 °$ is called obtuse angle. Straight angle - Angles ,measure of $180 °$ is called straight angle. Reflex angle - Angles, measure of greater than $180 °$ and less than $360 °$ is called reflex angle.
(a) $78 °$
(c) $65 °$
(f) $90 °$ (b) $124 °$ (g) $180 °$
(d) $190 °$
(e) $358 °$
(h) $288 °$

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