Bisector: Finding the size of angles in a triangle

Shown below is the triangle ABC.

Angle A is 80 degrees and is intersected by AD.

Calculate angle DAB.

40°

The triangle ABC is shown below.

BD bisects B.

Angle B is 66 degrees.

Calculate the angle $∢\text{DBC}$

33°

The triangle ABC is shown below.

CD bisects C.

Angle C equals 122 degrees.

Calculate angle $∢\text{ACD}$.

61°

a is a bisector.

$∢BAC = 80°$

Calculate angle $\alpha$.

40

$∢ABC\text{ }=130$

Given that a is a bisector, calculate angle $\alpha$.

65

What is the size of angle ABC given that BD is a bisector?

80

The triangle ABC is shown below.

BD bisects B.

Angle B is a right angle.

Calculate angle $∢\text{ABD}$.

45°

AD bisects of A in the triangle ABC.

Angle B equals 35 degrees, while angle C equals 45 degrees.

Calculate the angle $\sphericalangle\text{BAD.}$

50°

AD bisects A in triangle ABC as shown below.

Angles B and C both equal 50 degrees.

Calculate angle $\sphericalangle\text{CAD.}$

40°