Finding the Missing Angle

Topic:
Angles
There are three different angles: <ABC (the larger angle) <ABD (one angle that makes up the larger angle) <DBC (the other angle that makes up the larger angle) By clicking and dragging a point on one of the rays, you can change the measurement of each of the angles. <DBC is missing. You can calculate the missing angle by subtracting the smaller angle (<ABD) from the larger angle (<ABC).