Question

PLEASE HELP ME ON THIS I AM BEGGING YALL!! PLEASE

answer choices:
1. Additive property of length
2. All right angles are congruent
3. definition of angle bisector
4. definition of equilateral triangle
5. definition of midpoint
6.vertical angel theorem

Answer 1

additive property of length

Explanation:

all that is showing you is that you can add the two smaller segments to get the entire segment