Question

Can anybody please help me with this?

Answer 1

Do you know the Angle Bisector Theorem?
The bisector of an angle of a triangle divides the opposite side in two segments that are proportional to the other two sides of the triangle.

Answer 2

so m<c is 81 too?

Answer 3

For the theorem to work, you'd have to have that AG bisects BAC. We don't know that because it's not given.

Answer 4

Oh ok... can you help though because I am confused how to solve it? :(

Answer 5

The theorem states that if one anlge is bisected (the angle at left), then the segments of the opposite side, a and c, are proportinal to b and d, respectivley.

In your problem, you know one of the small angles at left is 10 degrees, but you don't know what tho other small angle is, so you don't know that the left angle of the large triangle has been bisected, so you cannot conclude anything about the lengths of the other sides and the segments of the opposite side.

Answer 6

so not enough information?

Answer 7

@mathstudent55