Answer: 6
Step-by-step explanation:
9 animals are in each group.
10. acute angles: 0
Right angles: 4
Obtuse angles: 0
Perpendicular lines: 0
Parallel lines: 2
11. Acute angles: 2
Right angles: 0
Obtuse angles: 1
Perpendicular lines: 0
Parallel lines: 0
12. H
Answer:
true
Step-by-step explanation:
Answer:
-8
Step-by-step explanation: