The committee's obtusity frustrated everyone who had worked late to prepare the report.

His repeated obtusities during the meeting frustrated everyone who expected constructive input.

The field mycologist carefully noted that the fresh cap was obtusely umbonate, a feature that helped distinguish it from similar species.

The obtuse-angular triangle on the diagram clearly showed one angle greater than ninety degrees.

The students were surprised to discover several obtuse triangles in the geometry competition problems.

The obtuse triangle in the diagram has one angle measuring 120 degrees, which requires a different trigonometric approach.

The obtuse-angled triangle in the diagram made calculating the area a bit more challenging than the right triangle.

The interior designer strategically placed mirrors to avoid creating obtuse angles that made the room feel cramped.

The surveyor measured the obtuse angle between the two roads to plan the new roundabout.

At low tide, she carefully examined the obtuse horn shell wedged between the mangrove roots.