Classify the following triangles as acute, right or obtuse-angled triangles according to the magnitude of their angles.
$67 °, 29 °, 84 °$

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Solution

Let's observe the angle of the given triangle.
Angles are $67 °, 29 °, 84 °$
Since all of the angles are less than 90°.
Hence, it is an acute-angled triangle.

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