ISEE/SSAT Vocabulary Builder›Words›T›triangle
ISEE/SSATeasy
triangle
flat shape with three straight sides and three angles
Synonyms
- trigon
- trilateral
triangle in a sentence
Carpenters often nail a wooden triangle beneath the shelf to stop it from wobbling.
While sketching the sailboat, the young artist added a simple triangle for the sail, using three straight lines meeting at sharp points.
Where it comes from
From Latin tri- 'three' plus angulus 'angle'
Memory hook
TRI (three) + ANGLE — a triangle has three angles.
Word parts
- tri, ter — three
triangle: tri- (three) + angle (corner)
Read it in context
- Stitches Before Saturday Narrative