intro Time to learn about the coordinate plane with Serenity. attention rectangle 280 The origin is point on the coordinate plane where the x-axis and the y-axis intersect. prompt 760 40 5 280 Rewind the video and copy down the three scenarios. Are all of these shapes polygons? yes no no Which quadrant will Point C be in? I II III IV IV What is the side length of line segment AD? 6 What is the side length of line segment DC? 6 prompt 460 10 280 Pause the video and try this one on your own!