The distinctly shaped________ seen at the Great Mosque at Córdoba (9.8) are | composed of arches with alternating red and white voussoirs

What is a tryptych?

A. an oil-based paint that was used in altarpieces B. a Latin term used to explain the Trinity C. a three-part work D. a type of stitch used by merchant weavers

What change did Donald Meeker and his associates implement to the design of Interstate freeway signs to make them easier to read?

a)  They altered the existing font. b)  They changed the background color to green. c)  They eliminated capital letters in favor of lower-case letters. d)  They changed the shape of the signs.