acute
angle
angles
basic
black
child
collection
college
design
different
drawing
education
element
equilateral
figure
flat
formula
geometric
geometry
graphic
illustration
isolated
isosceles
kids
learn
line
math
mathematical
mathematics
maths
right
scalene
school
science
set
shape
side
sides
sign
silhouette
simple
student
study
symbol
teaching
template
triangle
triangles
white