accuracy
angle
centimeter
concept
design
document
drafting
drawing
education
element
engineer
engineering
equipment
flat
geometric
geometrical
geometry
icon
illustration
instrument
isolated
leaf
leave
length
line
math
mathematics
measure
measurement
meter
metric
millimeter
number
object
paper
plastic
rule
ruler
ruler vector
scale
scheme
school
shape
simple
symbol
technical
tool
triangle
triangular