Choose the type of transformation (uniform scale, scale, rotate and translate) by clicking on its radio button. There is also a button to select changing the pivot point. The parameter input window will change to the appropriate display of parameters based on the radio button you click on.
Since the application of transformations to the geometry involve mathematical computations, you have the choice to show in the technical content window either the mathematics used to achieve the effect or the OpenGL code that causes the effect. Click on the radio button associated with your choice.
By clicking on this button, the transformation values are reset to their initial values and the triangle is drawn in its initial position, size and orientation