Congruent Triangles Exploration 4

Drag any point on triangle ABC to resize the triangle. Study what happens to triangle EDF when you resize triangle ABC. Also try to coincide (put one triangle on top of the other) and see if they match up.
Given the triangles above, what combination of parts are highlighted and compared?
Looking at the triangle, is the angle in between the two sides?
With this combination of parts side-side-angle (SSA), can you conclude that the two triangles are always congruent to each other? Why or why not?
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– MARVEN D. MANZANO, Lorena Mendoza

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