In the geometry class, we compared the areas of several right-angled triangles to understand the Pythagorean theorem.

The school geometry worksheet asked us to prove that the hypotenuse of a right-angled triangle is the longest side.

In the diagram, the shaded region is part of an obtuse-angled triangle whose longest side measures 10 cm.

The teacher asked the students to classify each triangle on the worksheet and to identify any acute-angled triangle.

In the geometry class, we explored several obtuse-angled triangles and calculated their areas.

The carpenter fastened the angle iron to the beam to reinforce the shelf.

The astronomer calculated the solid angles subtended by each star cluster to estimate their apparent sizes.

To solve the problem, you must measure the angle of reflection of the laser beam from the mirror.

The student calculated the angle of refraction after observing how the light beam bent when it entered the glass block.

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