| Rating | Solver | Clue |
|---|---|---|
| GRAPH | Mathematical drawing | |
| DIAGRAPHICS | The art or science of descriptive drawing; especially, the art or science of drawing by mechanical appliances and mathematical rule. | |
| GRAPHICS | The art or the science of drawing; esp. of drawing according to mathematical rules, as in perspective, projection, and the like. | |
| PROTRACTOR | A mathematical instrument for laying down and measuring angles on paper, used in drawing or in plotting. It is of various forms, semicircular, rectangular, or circular. | |
| DIAGRAM | Any simple drawing made for mathematical or scientific purposes, or to assist a verbal explanation which refers to it; a mechanical drawing, as distinguished from an artistical one. | |
| BLACKBOARD | A broad board painted black, or any black surface on which writing, drawing, or the working of mathematical problems can be done with chalk or crayons. It is much used in schools. | |
| SCALE | A mathematical instrument, consisting of a slip of wood, ivory, or metal, with one or more sets of spaces graduated and numbered on its surface... | |