Answer: 8
Step-by-step explanation:
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Equation of line in point - slope form :
Here :
1. Isosceles, right.
2. Scalene, right.
3. Equilateral, acute.
4. Scalene, acute.
5. Isosceles, acute.
6. Scalene, obtuse.
7. Scalene, obtuse.
8. Scalene, obtuse.
9. Equilateral, acute.
10. Isosceles, obtuse.
25 * 5 + 15 * 3 - 40 * 2 =
125 + 45 - 80 =
170 - 80 =
90