Answer:
Step-by-step explanation:
Statement Reason
1. ∠4 is an exterior angle of ΔABC Given
2. ∠3 and ∠4 form a linear pair Linear pair property
3. ∠3 is supplementary to ∠4 Straight line property
4. m∠3+m∠4=180° ∠3 is supplementary to ∠4
5. m∠1+m∠2+m∠3=180° Triangle sum theorem
6.m∠1+m∠2+m∠3= m∠3+m∠4 Statement 4 and 5
7. m∠1+m∠2=m∠4 Subtraction property
The image is black, what’s the question?
X-3 is the expression that shows it
Answer:
4
Step-by-step explanation:
Answer:12
Step-by-step explanation:
15-3=12
