Question 732060: What Is The Main Thing I Need To KNow About Geometry
Found 2 solutions by Alan3354, MathLover1:
Answer by Alan3354(69443)   (Show Source):
Answer by MathLover1(20850)  (Show Source):
You can put this solution on YOUR website! Geometry is    and their  .
Geometry can be divided into:
  - which is about flat shapes like lines, circles and triangles, shapes that can be drawn on a piece of paper
  - which is about three dimensional objects like cubes, prisms and pyramids
 ,  , and  - terms whose definitions you need to know
A - has no dimensions, only position
A -is one-dimensional
A -is two dimensional (2D)
A -is three-dimensional (3D)
There are many special  used in geometry. The most common geometrical symbols are:
symbol for triangle  , for angle <, for perpendicular lines, for parallel lines , for right angle, for congruent shapes (same shape and size), three dots for “a equals b, therefore b equals a”, and so on
you need to know what  are
A  is a 2-dimensional shape made of straight lines.
example: triangles and rectangles are polygons (you find out what other polygons we have)
Solid shapes- three-dimensional shapes ....and so on
most important is to know Pythagoras' Theorem which is very often used
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