How many diagonals can be drawn from a vertex of an n-gon?

n - 1
n
n - 3
n - 2

The measure of one angle of an octagon is two times smaller that of the other seven angles. what is the measure of each angle?

Stefano accidentally dropped his sunglasses off the edge of a canyon as he was looking down. the height, h(t), in meters (as it relates to sea level), of the sunglasses after t seconds, is shown in the table. during its descent, the pair of sunglasses passed by a climber in the canyon 6 seconds after stefano dropped them. to the nearest meter, what is difference in elevation between stefano and the climber? 166 meters 176 meters 230 meters 240 meters its b.176 i took the test 166 is wrong and 176 is correct

What is the value of x in the this question ?