Answer:
229376
Step-by-step explanation:
Term n is given by 2ⁿ⁻¹, so the answer is
2¹⁵ + 2¹⁶ + 2¹⁷ = 229376
The triangle Sum Theorem says that the sum of all the angles in a triangle has to equal 180 degrees. Since all three sides (and, consequently, angles) in an equilateral triangle are the same, you can divide 180 by 3 to find the measure of any angle of an equilateral triangle (60 degrees).
Answer:
Third one? I'm not sure though.
Step-by-step explanation:
