Prove that the bisector of the vertical angle of an isosceles triangle is perpendicular to the base.
Asked by suman.manoj2002 | 28th Oct, 2018, 02:33: PM
Let in triangle ABC,AD is bisector of vertical angle.
In ∆ABD and ∆ACD
angle BAD=angle CAD
AD is common line.
By SAS congruency ∆ABD congruent to ∆CBD
angle ADB=angle ADC
let angle ADB=x.
so angle ADC=x.
Hence it's proved.
Answered by Arun | 29th Oct, 2018, 11:07: AM
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