Classify the following triangles as acute, right or obtuse-angled triangles according to the magnitude of their angles.
$120 °, 33 °, 27 °$

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Solution

Let's observe the angle of the given triangle.
Angles are $120 °, 33 °, 27 °$
Since one of its angle is greater than 90°.
Hence, it is a obtuse-angled triangle.

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