Prove the equality of right-angled triangles in hypotenuse and leg.

For the proof, we apply the superposition method. Suppose we have two triangles ABC and A1B1C1 in which the angles C and C1 are straight lines, AB = A1B1, BC = B1C1
The sides CA and CB will be superimposed on C1A1 and C1B1. All vertices will coincide. Thus, we proved that these triangles are equal



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