shapes

Rectangle/square/cuboid/cone/Triangle/cylinder/pyramid/oval/pentagon/hexagon/octagon

/quadrilateral/trapezium/rhombus/parallelogram/circle/sphere etc

http://en.wikipedia.org/. search for list of geometric shapes
http://www.youtube.com search for geometry shapes-videos

Triangles

Scalene triangle/acute triangle/rightangle triange/ obtuse angle triangle /Equilateral triangle
http://www.youtube.com/ search for geometry-triangles
http://www.onlinemathlearning.com search for types of triangles

http://www.1728.com search for types of triangles and other details

angles

acute angle/right angle/obtuse angle/straight angle/reflex angle

http://www.mathsisfun.com/angles.html
http://en.wikipedia/org/wiki/angle
http://www.youtube.com search for geometry/angles