Assertion: triangle | /r/Synonym | obtuse triangle
Facets:
Source sentences:
text: An triangle is said to be acute if all three of its angles are all acute, a triangle having an obtuse angle is called an obtuse triangle, and a triangle with a right angle is called right.
text: Finally, one of the angles can be more than 90o and the other two less; then the triangle is called an obtuse triangle.