Angles Small 320×65 Medium 640×129 Large 1024×207 Download Tiff Original 2400×485 | (85.6 KB) Description Showing different types of angles: right, acute, and obtuse. Keywords acute angle, angles, geometry, obtuse angle, right angle, types of angles Galleries Miscellaneous Angles Source: Ellsworth D. Foster ed. The American Educator (vol. 3) (Chicago, IL: Ralph Durham Company, 1921)
