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Outline
Geometric Construction 幾何作圖
Basics 基礎
Line Segments 線段
Triangles 三角形
Circles 圓形
Advanced 進階
Geometric Construction 幾何作圖
Author:
TLLF
A collection of construction problems with rulers and compasses 尺規作圖問題集
The majority of problems are adopted from the iPad app GeoGon (
http://iappideas.com/geocon
).
GeoGebra 互動數學教室
http://www.geogebra.hk
Table of Contents
Basics 基礎
Free Construction 隨意畫
Equilateral Triangle 等邊三角形
Midpoint 中點
Perpendicular Bisector 垂直平分線
Angle Bisector 角平分線
Perpendicular Lines 垂直線 (1)
Perpendicular Lines 垂直線 (2)
Parallel Lines 平行線
Side-Side-Side 邊邊邊
Line Segments 線段
Free Construction (with more tools) 隨意畫
Line between Points 與兩點等距的直線
Copy of Angle 複製角度
Line and Angle 線與角 (1)
Line and Angle 線與角 (2)
Trisect Line Segment 三分線段
Triangles 三角形
Circumcircle 外接圓
Incircle 內接圓
Equilateral Triangle over Circle 外接等邊三角形
Circles 圓形
Rectangle in Circle 長方形的外接圓
Right-angled Triangle in Circle (1) 圓內直角三角形
Right-angled Triangle in Circle (2) 圓內直角三角形
Tangent at a Point 圓上點的切線
Tangent from External Point 由圓外點畫切線
Three Mutually Tangent Circles (1) 三圓互切
Three Mutually Tangent Circles (2) 三圓互切
Advanced 進階
Equidistant Point 等距點
Chord Trisection 三分弦
Equilateral Triangle on Parallel Lines 平行線上的等邊三角形
Equilateral Triangle on Right Angle 垂直線上的等邊三角形
Next
Free Construction 隨意畫
New Resources
Multiplying 3-Digit by 2-Digit Numbers Using an Area Model
Multiplying 2-Digit by 2-Digit Numbers Using an Area Model
Positive and Negative Space
Nefroida
koch tool
Discover Resources
wert_nicht_multipliziert
#5) Triangle Centers
Maine map Jack Prior
Interior/Exterior Angles
รูปคลี่พีระมิด
Ratio of areas of 3-gons
Discover Topics
Correlation
Incircle or Inscribed Circle
Translation
Boxplot
LCM and GCD
