Angles in a triangle
The question
degrees
The third angle, given 35° and 40°
How it works.
3 corners=a straight line=180°
35 + 40 =75
35 + 40 =75
180 − 75 =105°
- 01
A triangle's three angles always add to 180°. Tear the corners off any triangle and they fit together into a straight line.
- 02
Two of them are given: 35 and 40, which is 75 between them.
- 03
So the third takes up what is left of the 180: 180 − 75 = 105°.