Everything Maths www.everythingmaths.co.za
Grade 11Geometry
Presented by Sikhumbuzo 201233151
by Siyavula on Jan 22, 2012
Scalene
A triangle with no equal sides
by itutor on Jul 29,
2013
Quadrilaterals
A shape with four angles and four sides that are all connected.
by Prateek Ahuja, Working at My life my
rules on Dec 26, 2012
Rhombus
A shape with four sides that are all congruent.
SajeelK on Dec 08, 2012s
Other polygons
Hexagon
Octagon
Regular Polygon
Wendy Mendoza
Using the Third Angle Thm.
22 87 180
109 180
71
m A
m A
m A
+ + < =+ < =
< =
4 15 71
4 56
14
m D m A
x
x
x
< = <+ ==
=
Find the value of x.
herbison on Jun 10, 2008
A. x = 4.5, y = 2.75
B. x = 2.75, y = 4.5
C. x = 1.8, y = 19
D. x = 4.5, y = 5.5
In the diagram, ΔFHJ ΔHFG. Find the values of x and y.
Everything Maths www.everythingmaths.co.za
Trapezium
A trapezium is a quadrilateral with one pair of opposite sides parallel.
Everything Maths www.everythingmaths.co.za
Kite
A kite is a quadrilateral with two pairs of adjacent sides equal.
●One pair of opposite angles are equal (the angles are between unequal sides).
●The diagonal between equal sides bisects the other diagonal.
●The diagonal between equal sides bisects the interior angles.
●The diagonals intersect at 90°.
Michelle Barnhill
Mar 17, 2011
Everything Maths www.everythingmaths.co.za
The mid-point theorem
The mid-point theorem states that the line joining the mid-points of two sides of a
triangle is parallel to the third side and equal to half the length of the third side.
Reference listMark,D.(2010). Basic of Geometry Grade 11 [on line],Available:file:///C:/Users/General/Downloads/11-euclidean-geometry-120122051003-phpapp02%20(1)%20(1).odp
-report –March-2010/Accessed 05 March, 2014
More sections see: www.everythingmaths.co.za
Hargadon, G.(2012).Basic geometry [online]www.geometry.com/2012/09/
Accessed on the 05 March, 2014
http://www.slideshare.net/1conejo/32-theorems-about-perpendicular-lines
Hargadon, G.(2012).Basic geometry [online]www.geometry.com/2012/09/
Accessed on the 05 March, 2014
http://www.slideshare.net/detwilerr/27-prove-angle-pair-relationships-27098638/accessed on the 05 March, 2014
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