supplementary angles

plural noun

: two angles or arcs whose sum is 180 degrees

Word History

First Known Use

circa 1924, in the meaning defined above

The Ultimate Dictionary Awaits

Expand your vocabulary and dive deeper into language with Merriam-Webster Unabridged.

1. Expanded definitions
2. Detailed etymologies
3. Advanced search tools
4. All ad-free

Discover what makes Merriam-Webster Unabridged the essential choice for true word lovers.

Start Your Free Trial Now

Rhymes for supplementary angles

• bangles
• dangles
• mangles
• spangles
• strangles
• tangles
• quadrangles
• rectangles
• triangles