Final answer:
Tanesha's flag, with two sides each measuring 40 inches, is an isosceles triangle that has two sides of equal length.
Step-by-step explanation:
The question is asking to identify the type of triangle based on given dimensions. Tanesha's flag is shaped like a triangle with side lengths of 40 inches, 40 inches, and 18 inches. To identify the type of triangle, we can use the lengths of its sides. The size of the flag is given as 40 inches on each side, making the two sides of the triangle equal. This characteristic defines the flag as an isosceles triangle since an isosceles triangle has at least two equal sides. The third side's length is not necessary to identify it as an isosceles as long as it's known that the two sides are equal.