obtuse-angled triangle (noun)

1. In Islamic architecture, the dome of the Rock in Jerusalem features geometric patterns, including beautiful obtuse-angled triangles.

2. During the construction of the Great Pyramid of Giza, the architects incorporated obtuse-angled triangles in the design to ensure stability and balance.

3. In a comic strip, the superhero's cape is often depicted as an obtuse-angled triangle flowing behind them as they fly through the air.

4. Adorning a romantic love letter, a heart-shaped locket can be made with the shape of an obtuse-angled triangle, symbolizing love that knows no bounds.