Google Classroom
Google Classroom
GeoGebra
GeoGebra Classroom
Sign in
Search
Google Classroom
Google Classroom
GeoGebra
GeoGebra Classroom
GeoGebra
Home
Resources
Profile
Classroom
App Downloads
例题1
Author:
季阳天
例题1.
如图,平面直角坐标系中,已知线段AB ,点A的坐标为(—2,1),点B的坐标为(0,1),将线段AB绕点O顺时针旋转90°得到线段A′B′,则 (1)点A在旋转过程中运动路径的长度=
; (2)线段AB在旋转过程中扫过的面积=
; (3)若题中的线段AB绕点O旋转一周,则线段AB扫过的面积=
.
GeoGebra
New Resources
Fibonacci Clock
畫出對稱圖形
sanjiaohanshu
判斷球體
Claude 解幾何題
Discover Resources
對稱
Liu Hui's Method of Finding π
gjh-e01-04 未知數角度的三角形
圓柱(可改底面圓半徑、柱高)
Copy of 分數比較
Discover Topics
Median Value
Coordinates
Logic
Linear Equations
Poisson Distribution