Difference between revisions of "Exterior angle"
(Created page with "<div style="float:right;"><asy>draw((0,50)--(40,1)--(0,0)--(0,50)); draw((0,50)--(0,68),linetype("0 2"),EndArrow); markscalefactor=0.4; draw(anglemark((40,1),(0,50),(0,68)),green...") |
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Revision as of 18:38, 8 March 2014
![[asy]draw((0,50)--(40,1)--(0,0)--(0,50)); draw((0,50)--(0,68),linetype("0 2"),EndArrow); markscalefactor=0.4; draw(anglemark((40,1),(0,50),(0,68)),green); label("A",(0,0),W); label("B",(40,0),NE); label("C",(0,50),W); label("D",(0,68),NW); [/asy]](http://latex.artofproblemsolving.com/7/0/0/700140655ecb08f6316582e02d389bce562fdff0.png)
An Exterior angle is the angle two lines form if one is extended as shown. In the figure, angle DCB is an exterior angle because its on the triangles exterior. it is supplementary to angle ACB.
- All angles in a polygon sum to 360 degrees
