Yes, it is.
Remote interior angles.
No. The sum of the other two interior angles.
No.
The 3rd angle of the triangle could be 90 degrees because the 3 angles in a triangle add up to 180 degrees.
It is 3.
Remote interior angles
Remote interior angles.
Remote interior angles.
Are two angle of a triangle that are not adjacent to the exterior angle
A triangle has 3 interior angles that add up to 180 degrees and 3 exterior angles that add up to 360 degrees
Exterior angle.
No. The sum of the other two interior angles.
angle dcf and angle dfc
For a polygon with n sides (n angles), there are (n - 1) remote interior angles for each exterior angle.
the exterior angle theorem
Yes, because it is equal to the sum of the two of them.
no because its on the outside and the angle would be wrong.