Quadrilateral Surprise!

저자:Tim Brzezinski

How would you put this property (dynamically illustrated below) into words? (Applet works best if quadrilateral is kept convex.) How can you formally prove what this applet informally illustrates?

Quick (Silent) Demo

새 자료

Function art 3D - waiting shed
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Pythagorean Template: Integer Legs
Slope Illustrator (2)
Congruent Sides & Angles in △s: Exploration

자료 찾기

implicit
Forms of a Quadratic Equation
pointicube
hoja7
May2
parallelogram area perimeter

주제 찾기

기하변환
평행사변형
선분
수
벡터 2D (2차원)