JPH0514291Y2 - - Google Patents
Info
- Publication number
- JPH0514291Y2 JPH0514291Y2 JP3808588U JP3808588U JPH0514291Y2 JP H0514291 Y2 JPH0514291 Y2 JP H0514291Y2 JP 3808588 U JP3808588 U JP 3808588U JP 3808588 U JP3808588 U JP 3808588U JP H0514291 Y2 JPH0514291 Y2 JP H0514291Y2
- Authority
- JP
- Japan
- Prior art keywords
- line
- center point
- right triangle
- length
- perpendicular line
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
- 239000000463 material Substances 0.000 description 5
- 229920003002 synthetic resin Polymers 0.000 description 4
- 239000000057 synthetic resin Substances 0.000 description 4
- 230000000694 effects Effects 0.000 description 2
- 239000000758 substrate Substances 0.000 description 2
- 239000002184 metal Substances 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
Landscapes
- Drawing Aids And Blackboards (AREA)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP3808588U JPH0514291Y2 (fr) | 1988-03-23 | 1988-03-23 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP3808588U JPH0514291Y2 (fr) | 1988-03-23 | 1988-03-23 |
Publications (2)
Publication Number | Publication Date |
---|---|
JPH01142978U JPH01142978U (fr) | 1989-09-29 |
JPH0514291Y2 true JPH0514291Y2 (fr) | 1993-04-16 |
Family
ID=31264655
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP3808588U Expired - Lifetime JPH0514291Y2 (fr) | 1988-03-23 | 1988-03-23 |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPH0514291Y2 (fr) |
-
1988
- 1988-03-23 JP JP3808588U patent/JPH0514291Y2/ja not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
JPH01142978U (fr) | 1989-09-29 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US2839841A (en) | Instructional building blocks | |
US5732474A (en) | Visual aid and manipulative for demonstrating geometric and trigonmetric functions | |
US4428732A (en) | Educational and amusement apparatus | |
US5215467A (en) | Mathematical instruction board and method of use | |
JPH0514291Y2 (fr) | ||
US3826021A (en) | Device for demonstrating and calculating trigonometric functions | |
CN201084297Y (zh) | 初中平面图形实验器 | |
JP3208390U (ja) | 三角定規 | |
KR200232077Y1 (ko) | 학습용 블럭 세트, 및 학습용 교재 세트 | |
US1132272A (en) | School appliance. | |
CN219553121U (zh) | 一种六边形教学教具 | |
JPH068966U (ja) | 「三平方の定理」学習教材 | |
RO114203B1 (ro) | Trusa pentru realizarea obiectelor unidimensionale, bidimensionale si tridimensionale | |
US6024574A (en) | Visual aids for understanding characteristics of geometric figures | |
CN210378007U (zh) | 一种多功能的数学计算旋转面板 | |
CN210535117U (zh) | 学乐魔力尺 | |
JPH0321993Y2 (fr) | ||
CN2175117Y (zh) | 一种三角形边角计算尺 | |
JP3004070U (ja) | 建物の立体模型用キット | |
CN2558532Y (zh) | 量角画角器 | |
JPH0529068U (ja) | 図形学習用教材 | |
CN2430286Y (zh) | 旋转式多用量角器 | |
JPH0248856Y2 (fr) | ||
JPS6230042Y2 (fr) | ||
CN2536414Y (zh) | 一种教学多用三角板 |