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44 votes
44 votes
Plzzz tell ans but not for points​ okkkkay if u ans for points i will report

plz telllllll

Plzzz tell ans but not for points​ okkkkay if u ans for points i will report plz telllllll-example-1
User Jason Portnoy
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1 Answer

16 votes
16 votes

Answer:

Given

  • ΔABC with ∠A = 90°
  • ΔADC with ∠D = 90°
  • The two triangles share same angle ∠C

With two same angles the triangles are similar according to AA similarity postulate:

  • ΔABC ~ ΔDAC

As we know if triangles are similar then their corresponding sides have same ratio:

  • AC/CD = BC/AC ⇒ AC*AC = BC*CD ⇒ AC² = BC*CD

User Arnorhs
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