Assertion: triangle's angle | /r/HasProperty | 30°
Facets:
Source sentences:
text: This approach may be used to rapidly reproduce the values of trigonometric functions for the angles 30°, 45°, and 60°.
text: The triangle with three sides of unequal length is called a 30° / 60° set square because the 'sharp' angle is 30°, the 'blunt' angle is 60° and the one where the two sides are mutually perpendicular is 90°.