Problem

(Geometry: display angles) Write a program that enables the user to drag the vertices of...

(Geometry: display angles) Write a program that enables the user to drag the vertices of a triangle and displays the angles dynamically as the triangle shape changes, as shown in Figure 18.35a. Change the mouse cursor to the cross-hair shape when the mouse is moved close to a vertex. The formula to compute angles A, B, and C are as follows (see Figure 18.35b):

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Solutions For Problems in Chapter 18

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