1. Quiz 4.1, 4.2 & 4.8 answers Isosceles, obtuse
Equiangular, acute, equilateral, isosceles
Right, scalene
False,
x = 9
Not possible
123
version A
Right, scalene
Equiangular, acute, equilateral, isosceles
Isosceles, obtuse
False,
x = 10
Not possible
123
4.1: Triangle Vocabulary
version B
4.1: Triangle Vocabulary

2. Quiz 4.1, 4.2 & 4.8 answers 4.2: Triangle Angles 8. 10x  2 = 9x + 9
version A
8. 10x  2 = 9x + 9
Third  Theorem
9. 2(x + 10) + 3x + 2 = 180
Triangle Sum Theorem
10. 9x + 2 = x  1
Exterior  Theorem
11. 2x + 3x x  12 = 180
12. x = 8
4.2: Triangle Angles
version B
8. 7x  4 = x + 4
Exterior  Theorem
9. 14x  5 = 7x + 1
Third  Theorem
10. 3x + 2x  3 + x + 12 = 180
Triangle Sum Theorem
11. 2(x  5) + x + 12 = 180
12. x = 12

3. Quiz 4.1, 4.2 & 4.8 answers 13. x = 74 13. x = 96 14. x = 4
4.8: Isosceles & Equilateral s
version A
13. x = 96
14. x = 48
15. x = 18; 40,40,100
16. x = 60, OC = 120
version B
13. x = 74
14. x = 4
15. x = 22; 40,40,100
16. x = 50, OC = 110
4.8: Isosceles & Equilateral s