For example: the inner angle and trigonometric theory, experimental tools use methods of paper cutting, bonding and measurement to make students feel intuitively, but due to errors in actual operation, the desired results are difficult to achieve. Now, use the Geometry Palette to draw a triangle, measure and group its three interior angles, then drag the vertices of the triangle to arbitrarily change the shape and size of the triangle, and then you find that the three interior angles are always 180 degrees no matter how you change them.
For example: the inner angle and trigonometric theory, experimental tools use methods of paper cutting, bonding and measurement to make students feel intuitively, but due to errors in actual operation, the desired results are difficult to achieve. Now, use the Geometry Palette to draw a triangle, measure and group its three interior angles, then drag the vertices of the triangle to arbitrarily change the shape and size of the triangle, and then you find that the three interior angles are always 180 degrees no matter how you change them.
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