Google Classroom
Google Classroom
GeoGebra
GeoGebra Classroom
Sign in
Search
Google Classroom
Google Classroom
GeoGebra
GeoGebra Classroom
GeoGebra
Home
Resources
Profile
Classroom
App Downloads
D 是垂足的條件不可少
Author:
hjyanghj
三角形
ABC中,
C為直角,
是邊
上的高,E、F分別是
ADC、
BDC的內心,E、F連線分別交
、
於G、H。 試證:
。 實驗:用下面的實驗來了解題目的性質,研判D可不可以放鬆條件為AB邊上的任一點,思考可能的證明方略。
GeoGebra
New Resources
Nikmati Keunggulan Di Bandar Judi Terpercaya
z`]]
רישום חופשי
Text with alpha background color
Parallel Lines and Angles: Thinking Classroom Exploration
Discover Resources
Cubic Plotter
Dot Products of Plane Vectors
practice
sujyhtbgvf
Turtle
Discover Topics
Geometric Distribution
Statistics
Ellipse
Numbers
Hypergeometric Distribution