angles
right angle
obtuse angle
acute angle
reflex angle
straight angle
full angle
triangle
acute, obtuse or right triangle (describing it by its angles)
scalene, isosceles, equilateral (descibing it by it sides and angles)
two-dimensional solids
prism, pryamid
polygons
regular or irregular polygon
concave or convex polygon
naming polygons by their sides: triangle, quadrilateral, pentagon, hexagon, octagon
square, rectangle, quadrilateral, trapezoid/trapezium
parallel lines, perpendicular lines
compass, protracgtor
Bonus: rhombus