1. 8,10,20
2. 16,18,25
3. 7,7,7
a. 1 and 2
b. 2 only
c. 3 only
d. 2 and 3
2007-04-12 04:11:53 · 8 answers · asked by Anonymous in Science & Mathematics ➔ Mathematics
d
No one side can be greater than the sum of the other two. For the first, 20 > 8 + 10.
2007-04-12 04:14:32 · answer #1 · answered by gebobs 6 · 0⤊ 0⤋
The answer is letter d. because of the triangle inequality theorem that states that if a, b, c are the lengths of the sides of a triangle:
a-b
1. 8, 10, 20 (is not correct because 20-10=10 and it is greater than 8)
2. 16, 18, 25 (possible because 25-16=9 which is less than 18)
3. 7, 7, 7 (possible because 7-7=0 which is less than 7. it is also good to know that this is an equilateral triangle and any length of side of an equilateral triangle is possible)
2007-04-12 04:18:31 · answer #2 · answered by Hannah C 1 · 0⤊ 0⤋
the answer is letter d. because of the triangle inequality theorem that states that if a, b, c are the lengths of the perimeters of a triangle: a-b
2016-11-23 14:37:28
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answer #3
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answered by ? 4
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D
cos 8 + 10 is not greater than 20
2007-04-12 04:14:32 · answer #4 · answered by Jesk 6 · 0⤊ 0⤋
the answer is d
8, 10, 20 has 1 side that is longer than the other 2 put together therefore cannot be a triangle.
2007-04-12 04:15:13 · answer #5 · answered by dark_massiah 3 · 0⤊ 0⤋
d
When added together 8 and 10 do not make 20
2007-04-12 04:16:39 · answer #6 · answered by RonnyJ 3 · 0⤊ 0⤋
use cosine law to find the angle.,make sure they add up to 180 The answer must include 3.
2007-04-12 04:16:25 · answer #7 · answered by El C 2 · 0⤊ 1⤋
d
2007-04-12 04:15:02 · answer #8 · answered by Anonymous · 0⤊ 0⤋