Which of the following is not true? a. the springing line of an arch is an imaginary line that goes between the two points from which the arch springs into its curve. b. architects are concerned only on the aesthetic appeal of architecture. c. a corbel dome is essentially created by rotating corbel arches. d. the keystone of an arch is the last piece put in and holds the voussoirs in place.

b. Architects are concerned only on the aesthetic appeal of architecture.

Explanation:

Architects are in charge of designing the buildings, from the aestetic part of the structure but are also in charge of certain parts fo the construction and of the possibility of the realization of the designs they do, there are certain things that eventhough they would look beautiful, they need to keep in mind that for example in their designs they cannot put certain things that are physically impossibe just because it loks pretty.

i would say the answer is b. zigzag lines of the leaves. i believe this is the answer because zigzag lines go in different direction while the other options like: the vertical lines of the trees, the dotted lines on the road, and the curved lines of the park benches go in one direction.

using scientific color theory, seurat developed a systematic method of painting called pointillism.