Convex polygon inner and outer angle demonstration piece and convex polygon inner and outer angle sum demonstration device
The invention provides a convex polygon inner and outer angle demonstration piece and a convex polygon inner and outer angle and demonstration device, and belongs to the technical field of teaching aids. The convex polygon inner and outer angle demonstration piece comprises a mounting rack, a power...
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Format: | Patent |
Sprache: | chi ; eng |
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Zusammenfassung: | The invention provides a convex polygon inner and outer angle demonstration piece and a convex polygon inner and outer angle and demonstration device, and belongs to the technical field of teaching aids. The convex polygon inner and outer angle demonstration piece comprises a mounting rack, a power mechanism, a transmission mechanism and a convex polygon mechanism, the convex polygon mechanism is arranged on the surface of the mounting rack, and the power mechanism and the transmission mechanism are arranged on the mounting rack; the convex polygon mechanism comprises at least three side long rods which are sequentially and rotatably connected end to end, the power mechanism is connected with the convex polygon mechanism through the transmission mechanism, the power mechanism drives the side long rods of the convex polygon mechanism to move through the transmission mechanism, and angle transformation of the inner angle of the convex polygon mechanism is completed. The demonstration device comprises the convex |
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