Answer:
y=42
Step-by-step explanation:
y+48+90=180
y=180-138
y=42
Answer:
13 cm
Step-by-step explanation:
78/6=13
0.4444444444444
is the answer for your question it repeats so your gonna want to put a bar notation.
Angles 1 and 3, angles 2 and 4, angles 5 and 7, and angles 6 and 8. They are also congruent, because vertical angles are congruent.