Example description: Click Insert-Shape-Select Cube-Insert two cubes overlapping top to bottom.
Looking down means you can see the top shape, but you can’t see the others - click Insert - Shape - select any polygon and draw the top shape.
Another example is to put two cubes side by side, use any polygon to draw the outer outline of the upper side - and then use a straight line to draw the middle intersection, you will get a two-rectangle puzzle. Graphics together.
The picture shows a hollow cylinder. When looking from above, you can only see the ring formed by the combination of the large circle and the small circle, so drawing a ring is its top view.
In order to enhance the understanding of the overhead view in daily life, first use the mobile phone to take a photo looking down, as shown in the picture, use the mobile phone to take a cylindrical cup and place it upside down on the table to understand the overhead view
Note that the ring of the cylinder in the top view draws a straight line, so the sleeping cylindrical cup is a rectangle in the top view.
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