2 angles in a tringle add up to 115 degrees what is the size of the thrid angle #
2 answers:
The size of the third angle is 65°.
All interior angles in a triangle must equal to 180°.
So, if 1st and 2nd angle is 115°, then, the 3rd angle would be equal to the difference of 180° and 115°.
3rd angle = 180° - 115° = 65°
65
Because a triangles angle all add up to 180
If 2=115
You do- 180-115= 65
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