In a triangle ABC angle A =120°. AD is perpendicular on BC . Also AB+ BD = CD, then find angle C.
1. 30°
2. 20°
3. 15°
4. 25°
Answers
Answered by
9
Answer: 30 degree
30 degree
Step-by-step explanation: forget the side's measurement
Angle sum property of a triangle is 180 degree.
So if AD is perpendicular then it is bisecting angle A. So angle DAC is 60 degree.
Angle D is 90 degree and angle C is suppose to be 180- 60- 90= 30 degree.
Similar questions