Question

In figure 12.9 , ABCD is a Kite and AC is a diagonal: (i)Is triangle ABC congruent to triangle ADC
(ii)Show that angle B = angle D ​

Answer 1

$hence \: \: it \: \: is \: \: proved \\ \: that \: \: \\ (triangle)abc = (triangle)adc$

Answer 2

Answer:

Full form of cpctc = Corresponding parts of congruent triangle is congruent

Step-by-step explanation:

(I) In tri ABC and tri ADC

proving congruence

AC = AC ( Common )

AB = AD( Given)

DC = DB ( Given )

Therefore, tri ABC and tri ADC is congruent (by SSS)

(II) angle B = angle D ( by cpctc)

Hence prooved

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