Answer:
A yes, B no
Step-by-step explanation:
The triangle inequality states that the sum of any 2 sides of the triangle must be greater than the third side.
A Given 21, 18, 17 , then
21 + 18 = 39 > 17
21 + 17 = 38 > 18
18 + 17 = 35 > 21
Thus the triangle could exist
B Given 3, 12, 8 , then
3 + 12 = 9 > 8
3 + 8 = 11 < 12 ← fails the test
Thus the triangle does not exist
Answer
I think the answer is C if its not then say the answer in the comments.
Step-by-step explanation:
Answer:
x = 30°
Step-by-step explanation:
5x + x + x + 5x = 360° ( exterior angle property)
12x = 360°
x = 360/12
x = 30°
Answer:
Step-by-step explanation:
supplementary angles add up to 180
so let one angle be x.....and the other angle is 5 times bigger....so let the second angle be 5x
x + 5x = 180
6x = 180
x = 180/6
x = 30
5x = 5(30) = 150
so one angle is 30 and the other angle is 150
