Classify the 180° according to magnitude.
Classification of angle on the basis of its magnitude:
An angle whose measure is exactly 180°is called as straight angle,
Hence,180°is a straight angle.
Classify the 76° according to magnitude.
Classify the 240° according to magnitude.
Classify the following triangles as acute-angled, obtuse-angled, right-angled triangles according to the magnitude of their angles.
(1) 60°,60°,60°
Classify the angle whose magnitude is 180°.