Answer:
1. This equation of m<a + m<c = m<b - m<c wouldn't be correct unless the measure of angle c was 0. So technically there is no statment to make that equation true.
2. Angle addition postulate.
3. Transitive property of equality.
4. Substitution property.
Step-by-step explanation:
You might want to recheck and see if these are the correct answer they seem to be to me. Im only in 10th grade so i kind of just learned this.
If you have any questions feel free to ask in the comments - Mark
Also when you have the chance please mark me brainliest.
