+78 not a huge amount of info :P
If you are asking what that symbol means, it simply refers to a line starting at A and ending at B
take a look at this image;
http://www.math4ged.com/wp-content/uploads/2011/07/ged-math-triangle-properties-21.png
In this you will see the verticies (corners) marked as letters A,B and C
in this case - your notation refers to the line starting at A and ending at B - which is 10ft
--->
AB - line from A to B
/\
ABC - angle at B
hope this helps
+78 not a huge amount of info :P
If you are asking what that symbol means, it simply refers to a line starting at A and ending at B
take a look at this image;
http://www.math4ged.com/wp-content/uploads/2011/07/ged-math-triangle-properties-21.png
In this you will see the verticies (corners) marked as letters A,B and C
in this case - your notation refers to the line starting at A and ending at B - which is 10ft
--->
AB - line from A to B
/\
ABC - angle at B
hope this helps
