三角形

簡易的數學學習軟體，藉由手動操作來觀察三角形四個心的變化。

●操作方法●
用手指拖曳三角形的頂點使其改變形狀。
開啟內心、外心、重心、垂心等按鈕使其位置顯示在螢幕上。
藉由操作可觀察到四心相對位置的變化以及其路徑的移動！
用雙指在螢幕上連擊兩下以顯示 / 隱藏選單。 Simple math learning software, with manual operation to observe the changes in the heart's four triangles.

● ● Operation
Drag the vertices of a triangle with your fingers so that it changes shape.
Open heart, circumcenter, center, orthocenter and other buttons to make the position shown on the screen.
Operation can be observed by moving the relative positions of the four heart changes and its path!
Batter twice with two fingers on the screen to show / hide menu.