Equilateral is a weird little novel, but any reader familiar with Ken Kalfus expects his writing to go off-road. Kalfus wrote one of the best and certainly the least sentimental novels about New York ...

Big Idea – We can describe, measure, and compare spatial relationships. to build on students' knowledge of triangle and develop students' reasoning with properties of different classes of triangles to ...

VO: Ambrose is an apprentice at the world famous Grecian Pizza Parlour. He's learning all aspects of the profession, and is now able to roll out a perfect circle of dough. This is how professional ...

Yutai's Dispersive Equilateral Prisms, which are fabricated from H-ZF13, F4,H-K9L or infrared material.These prisms create less stray light than diffraction gratings, thereby eliminating the higher ...