Angles inside a Shape

We know that the sum of all angles inside a triangle is 180 degrees.Look for the Tiger Sky Tower. Draw the shape of the observation cabin of the Tiger Sky Tower in the given space below.

Calculate the sum of all angles inside the shape of the observation cabin of Tiger Sky Tower in the given space below. No. of triangles in shape = 9
Sum of interior angles = 9 x 180 degrees = 1620 degrees