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I need help on a problem

Sagot :

in this problem we have that

Triangle JTN is an isosceels triangle, because the triangle has two equal sides and two equal interior angles

segment TE is the altitude of triangle JTN, its a perpendicular bisector segment JN

that means

JE=NE

we have

JT=NT

mso

triangle TJE and triangle TNE are congruent by SAS

triangles TJE and trTNE are acute triangles