Summary
Summary Geometry made easy
- Course
- Mathematics
- Institution
- 11th Grade
This documents is a summary of Euclidean geometry theorems. It gives hints on how to tackle it and also covers the basics from grade 10 on Euclidean geometry.
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Euclidean GeometryRevision
1 Parallelogram
DC AB AD B C
DC AB BC
f
n
AD
opposite sides are equal
µ
and parallel
A 1
parallel means that the lines will
never touch even if you extend
them to infinity
5 8 A E
opposite angles are equal
AO OC DO BO
diagonals bisect each other
bisect means to cut a line into 2 equal part
2 The midpoint Theorem
The line joining the midpoints of two sides of
a triangle is parallel to the third side and half
the length of the third side
n
, A
The triangle does not need
to be an equilateral triangle
I
s E Once you have a line that
bisects two sides of a triangl
B c you can
apply mid pt theorem
0 0
w 0
C C V
n
r
M
A A
p
Remember it can be rotated
3 Fun Parallel lines makes maths FUN
equal corresponding angles
180 Co interior angles
equal Alternate angles
n
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