algebra
angle
black
class
classroom
drawing
education
equal
equation
formula
fundamental
geometric
geometrical
geometry
hypotenuse
illustration
law
learn
lecture
lesson
line
math
mathematical
mathematician
mathematics
perimeter
pythagora
pythagoras
pythagorean
right
rightangled
school
science
shape
sign
simple
square
study
studying
symbol
teach
technical
theorem
thin
white