Math, asked by deepakvvarshney9, 9 months ago

prove that opposit two equal sides of triangle are equal with figure​

Answers

Answered by akshatthakur2312
0

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Answered by nehaimadabathuni123
0

Answer:

ABC is a given triangle with, AB=AC.

To prove: Angle opposite to AB= Angle

opposite to AC (i.e) ∠C=∠B

Construction: Draw AD perpendicular to BC

∴∠ADB=∠ADC=90°

Proof:

Consider △ABD and △ACD

AD is common

AB=AC

∴∠ADB=∠ADC=90°

Hence ∠ABD=∠ACD

∠ABC=∠ACB

∠B=∠C. Hence the proof

This is known as Isosceles triangle theorem

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