Determine whether a triangle can be formed with the given side lengths. If so, use Heron's formula to find the area of the triangle. (5 points) a = 240 b = 123 c = 207

Triangle inequality rule states that the sum of eachpair of sides must be greater than the third sides.

240 + 123 > 207 true

240 + 207 > 123 true

123 + 207 > 240 true

A = √(s(s-a)(s-b)(s-c))

s is the semi-perimeter (a + b + c)/2

s = (240 + 123 + 207)/2

s = 285

A = √(285*(285-249)(285-123)(285-207))

A = 12,730 units^2

Step-by-step explanation:

i believe the answer is the polygon, heptagon.