To generate aįigure such as a triangle, rectangle or an even more complicated figures, click anywhere on the Why point A and A2 are in the same position.Ħ - Click on the button "0, 1 or 2 reflections" in order to have 1 reflection. Rotate the purple line so that it is in the same position as the red line (same line). Reflection across the "red" line, point A1 is reflected a second time across the "purple" line. Drag point A and repeat untill you are sure you understand the definition given above.ģ - Drag point A so that it is on the line of reflection, Where is point A1? Explain.Ĥ - Change the position of the line of reflection using the top scroll bar (red line) and examine the distances as above and the angle between AA1 and the line of reflection.ĥ - Click on the button "0, 1 or 2 reflections" in order to have two reflections. Are they equal? How is the angle between segment AA1 and the line of reflection?(If and when dragging a point another point is plotted, delete it using the button "delete last point"). compare the distances from A to the line of reflection and from A1 to the same line. Your browser is completely ignoring the tag!ġ - click on the button above "click here to start" and MAXIMIZE the window obtained.Ģ - Press button "0, 1 or 2 reflections" to obtain one reflection only (red line). The line and segment AA1 is perpendicular to the line of reflection.
Point A1 is the reflection, across a line, of point A if the midpoint M of points A and A1 is on
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