shayshayyy41
25.02.2020 •
Mathematics
What is the most precise name of this figure? A parallelogram whose diagonals are perpendicular and congruent?
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Ответ:
see below
Step-by-step explanation:
The purpose of this construction is to create ΔEJK so it is congruent to ΔBHI. This is done by making EK≅BI≅BH≅EJ, then by making JK≅HI. Since corresponding parts of congruent triangles are congruent, this makes ∠JEK≅∠HBI, hence ∠DEF≅∠ABC.