Find the measurement of the angle indicated for each trapezoid

What is the rotational symmetry of a wheel

Solve the system of equations. y= 2x y= x^2 - 15

The given dot plot represents the average daily temperatures, in degrees fahrenheit, recorded in a town during the first 15 days of september. if the dot plot is converted to a box plot, the first quartile would be drawn at __ , and the third quartile would be drawn at link to the chart is here