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ASA Criteria for Congruency

i Observe the...

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Question 153 (i)

Observe the following figure and state the three pairs of equal parts in $Δ A B C$ and $Δ D B C$ .
Is $Δ A B C ≅ Δ D C B$ ? Why?

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Solution

In $Δ A B C$ and DCB,
BC = BC
$∠ A B C = ∠ D C B = 70^{\circ} ∠ A C B = ∠ D B C = 30^{\circ}$
By ASA congruence criterion,
$Δ A B C ≅ Δ D C B$

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Question 153 (ii)

Observe the following figure and state the three pairs of equal parts in $Δ A B C$ and $Δ D B C$ .
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Question 144 (i)

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ASA Criteria for Congruency

Standard VII Mathematics

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