This is a question that is part of an IQ test. There was a time when the IQ test was considered to be extremely important by a lot of people. There are some people who are unable to get jobs because their IQ test score is not as high as what the companies have expected.
Over the past years, more and more studies show that IQ tests should not be the basis of people in knowing if the person is smart or not. So many other things should be thought about and considered before knowing for sure. For this particular question, the next figure should be the blue and green triangles together on the upper right quadrant of the figure. This is the figure that will complete the series.