When a straight line standing on a straight line makes the adjacent angles equal to one another, each of the equal angles is right, and the straight line standing on the other is called a perpendicular to that on which it stands.
Answer:
1. C
2. D
3. A
4. B
I think it is: un rasgo que es diferente de cualquier rasgo de
antepasados comunes
c
Explanation:
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