26. 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
27. 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.
29. 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
30. 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.
31. Reference list
Mark,D.(2010). Basic of Geometry Grade 11 [on line],Available:file:///C:/Users/G
-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/accesse
on the 05 March, 2014