accuracy
background
centimeter
centimeters
chalk
chalkboard
college
color
copy
design
drafting
drawing
education
engineering
equipment
flat
geometry
green
instrument
knowledge
lay
learn
length
line
markings
math
mathematical
mathematics
measure
measurement
measuring
millimeter
nobody
number
object
precision
ruler
school
science
shape
space
stationery
supply
text
top
triangle
view
yellow