Quandaries
and Queries
Who is asking: Student
Level: Middle
Question:
how can u prove sum of angles in a triangle equal to 180 degrees?
Hi,
Look at the triangle ABC and extend the line segment BC to a point P. Draw a line segment CD, parallel to AB.
Since AB and CD are parallel what can you say about the angles CAB and ACD? What about angles ABC and DCP?
Penny