yo 4 ABC is an isosceles triangle with ABC altinades (Fig 7.34) © State the three pairs of equal pansin AADB AADC? Why or why mis ZB=2C? Why or why not? (iv) Is BD=CD? Why or why not?
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Answer:
We have
AB=AC
⇒∠B=∠C
As AD is altitude, hence
∠ADB=∠ADC=90
∘
Three pairs of equal parts in △ADB and △ADC are
AB=AC
∠B=∠C
∠ADB=∠ADC
As two paris of angles in △ADB and △ADC are
equal, hence the third pair will also be equal
∠DAB=∠DAC
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SIMILAR QUESTIONS
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Is ΔADB≅ΔADC?
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In figure, AB∣∣DC and AB=DC. State the three pairs of matching parts used to answer.(Is ΔACD≅ΔCAB)
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