Question

Find the size of unknown angles.​

Answer 1

Answer:

ACB= 65 degree, CBA = 115 degree, BCA = 65 degree

Step-by-step explanation:

ACB = 65 degree as ACD and ACB are linear pair of angles

CBA = 115 degree as ACB AND CBA are supplementary angles

BAC = 65 degree as CBA and BAC are supplementary angles

This was your answer....hope it will help

Answer 2

Step-by-step explanation:

1. the sum of interior angle =180°
2. angle c=b
3. so angle b+c+a=180°
4. 2b+a =180°
5. b+a=180°÷2
6. a = 90° ÷ 2=45°
7. b=c=45°
8. a=180°-90=90°