Answer:
Activity 68
a. ∠1, ∠3, ∠4 : its ∠1
b. ∠2, ∠4, ∠5 : its ∠5
c. ∠5, ∠6, ∠8 : its ∠8
Activity 69
A
1. 13, 15, 28 : No because sum of the 2 sides is not larger than the third
2. 4, 9, 14 : No because sum of 2 sides is not larger than the third
3. 15, 20, 25 : yes because sum of 2 sides is larger than the third
also
its a right triangle. its a 3 4 5 right triangle where 5 is the hypotenuse
B.
The third side must be shorter than 12 + 23 = 35 and longer than 23 — 12 = 11. So the range is 11 to 35 units, not including 11 or 35.
Activity 70
shortest side = smallest angle on the opposite side
longest side = largest angle on the opposite side
B is 30 A is 60 C is 90
1. ∠B ∠A ∠C
2. ∠E ∠D ∠F
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