Question

FBD=? Градусов FBA=30Градусов FB=Биссектриса ABD ABC=180 Градусов

Answer 1

Решение находится на фото

Answer 2

It seems like you are describing a geometric scenario involving angles and bisectors. However, the notation and description are a bit unclear. I'll do my best to interpret and answer your question.

Let's assume we have a triangle ABC, and there's a point D on the side AC such that the angle ABC measures 180 degrees (a straight line). Also, let's assume that angle FBA is 30 degrees, and FB is the angle bisector of angle ABD.

To find the angle FBD, we'll use the angle bisector theorem, which states that in a triangle, if a line bisects an angle, it divides the opposite side into segments proportional to the adjacent sides.

Based on the information given, we can represent the angles as follows:

Angle FBA = 30 degrees Angle FBD = x degrees (unknown) Angle ABD = 2 * Angle FBD (since FB is the bisector of angle ABD)

Now, let's find the value of Angle ABD:

Since ABC is a straight line, Angle ABC = 180 degrees. Angle ABC = Angle ABD + Angle CBD 180 = ABD + Angle CBD

Since Angle FBA is 30 degrees, Angle CBD is also 30 degrees (since FB is the angle bisector).

180 = ABD + 30 ABD = 150 degrees

Now that we have the value of Angle ABD, we can find Angle FBD:

Angle ABD = 2 * Angle FBD 150 = 2 * Angle FBD

Now, we can solve for Angle FBD:

Angle FBD = 150 / 2 Angle FBD = 75 degrees

So, the measure of angle FBD is 75 degrees.