- #1
darkchild
- 155
- 0
My girlfriend is re-learning geometry. She has noticed that the sum of the angles of a triangle is equal to the measure of a straight angle and half the measure of a full revolution. She wants me to ask if there is any special relationship between a triangle and a straight angle or between a triangle and a circle that accounts for these similarities. I have no idea what to tell her, as I've never even thought of this sort of question before.