Classify the following triangles according to angle:

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Solution

Classify the given triangle

In the adjoining figure, $∠ N = 90^{\circ}$ which is a right angle.

Since, in a triangle if any angle is $90^{\circ}$ (right angle), the triangle is called a right-angled triangle.

Therefore, $Δ M N L$ is a right-angled triangle.

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