Chi is used in higher mathematics teaching
The utility model provides a chi is used in higher mathematics teaching, includes the chi physically, the limit portion of the chi body is equipped with open structure's cavity, intermediate position in the cavity articulates through the axle has ruler and support arm, the end of support arm is...
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| Format: | Patent |
| Sprache: | eng |
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| Zusammenfassung: | The utility model provides a chi is used in higher mathematics teaching, includes the chi physically, the limit portion of the chi body is equipped with open structure's cavity, intermediate position in the cavity articulates through the axle has ruler and support arm, the end of support arm is equipped with the protractor, the ruler is extending structure, the lower surface of ruler is equipped with tooth, limit portion in the cavity through the pivot articulated have with tooth matched with arc rack, the utility model discloses with the chi body and blackboard laminating, draw the various line segments of parallel lines, plumb line, triangle through the chi body and the cooperation of ruler, it is accurate to draw the effect, has improved the efficiency of giving lessons. |
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