CN202507784U

CN202507784U - Triangle making device

Info

Publication number: CN202507784U
Application number: CN2012200925278U
Authority: CN
Inventors: 马睿
Original assignee: 黄超
Priority date: 2012-03-13
Filing date: 2012-03-13
Publication date: 2012-10-31
Anticipated expiration: 2022-03-13

Abstract

The utility model discloses a triangle making device through which any triangle can be made. The triangle making device comprises an angle gauge, wherein a central point and a zero graduated line are formed in the angle gauge; a central graduated scale is hinged at the central point of the angle gauge; a zero graduated line graduated scale is hinged to the zero graduated line of the angle gauge; both the central graduated scale and the zero graduated line graduated scale have scale marks; and the central graduated scale is intersected with the zero graduated line graduated scale. By the triangle making device, various triangles such as an acute triangle, an obtuse triangle, a right triangle, an isosceles triangle and an equilateral triangle can be conveniently and quickly made.

Description

The triangle plotter

Technical field

The utility model relates to a kind of drawing instrument, relates in particular to a kind of triangle plotter.

Background technology

In the mathematical instrument that uses at present, be used to do the leg-of-mutton set square that has only, but set square can only be drawn several kinds of fixing triangles, other for example obtuse triangle, isosceles triangle but can not accomplish, so limitation is big.

Summary of the invention

The purpose of the utility model provides a kind of triangle plotter that can make arbitrary triangle.

For realizing above-mentioned purpose, the technical scheme that the utility model adopts is:

A kind of triangle plotter; Comprise protractor; Protractor has central point and zero graduation line, it is characterized in that: the central spot of protractor is hinged with the center rule, is hinged with zero graduation line rule on the zero graduation line of protractor; All have scale on the rule of center He on the zero graduation line rule, center rule and zero graduation line rule intersect.

Use the utility model can make various triangles such as acute triangle, obtuse triangle, right angled triangle, isosceles triangle, equilateral triangle, convenient and swift.

Description of drawings

Fig. 1 is the structural representation of the utility model.

In the accompanying drawing:

1, protractor; 2, zero graduation line rule; 3, center rule.

The specific embodiment

Below in conjunction with accompanying drawing and specific embodiment the utility model is further described:

A kind of triangle plotter; As shown in Figure 1, comprise protractor 1, protractor 1 has central point and zero graduation line; The central spot of protractor 1 is hinged with center rule 3; Be hinged with zero graduation line rule 2 on the zero graduation line of protractor 1, all have scale on the center rule 3 He on the zero graduation line rule 2, center rule 3 intersects with zero graduation line rule 2.

Claims

1. triangle plotter; Comprise protractor (1); Protractor (1) has central point and zero graduation line, it is characterized in that: the central spot of protractor (1) is hinged with center rule (3), is hinged with zero graduation line rule (2) on the zero graduation line of protractor (1); Center rule (3) upward and on the zero graduation line rule (2) all has scale, and center rule (3) intersects with zero graduation line rule (2).