Mathematics, 05.12.2021 19:30 artsycentury
Let ABC be an isosceles triangle at A. Let D be the midpoint of BC. On segment AD take any point E (E is different from A and D). Through E draw lines perpendicular to AB and AC at M, N, respectively.
a) Prove that quadrilateral AMEN is a square.
b) Prove MN // BC.
c) Through M draw a line perpendicular to DN at F. Prove angle AFE = 90 degrees
d) Prove that B, E, F are collinear.
Answers: 2
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Mathematics, 21.06.2019 23:30
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Let ABC be an isosceles triangle at A. Let D be the midpoint of BC. On segment AD take any point E (...
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