Answer:
8
Step-by-step explanation:
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18^2 + 68^2 =
= 324 + 4,624
= 4,948
74^2 = 5,476
4,848 is not equal to 5,476.
Since the sum of the squares of the lengths of the two shorter sides is not equal to the square of the length of the longest side, the triangle is not a right triangle.
There must be 2 lines on every plane because you need a y-axis and an x-axis.
