Question

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

Answer 1

Answer:

[i] In ΔABC and ΔADC,

• ∠BAC = ∠ADC = 90°
• ∠ACB = ∠ACD (common)

So, ΔABC ~ ΔDAC by AA similarity.

[ii] We know that, if two triangles are similar then their ratio of corresponding sides are equal

• AC/DC = BC/AC
• AC² = BC × DC (croos multiplication)

Answer 2

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