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RHS Criteria for Congruency

ABC is a tria...

Question

ABC is a triangle in which angle B = 2times angle C. D is point on BC such that As bisect angle BAC and AB=CD. Prove that angle BAC=72degree

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ABC is a triangle in which $∠ B = 2 ∠ C . D$ is a point on BC such that AD bisects $∠ B A C a n d A B = C D . Prove that ∠ B A C = 72^{\circ} .$

A B C

∠ B = 2 ∠ C

D

B C

A D

∠ B A C

A B = C D

∠ B A C = 72^{o}

∠ B = 2 ∠ C

∠ B A C

A B = C D .

∠ B A C

∠ B = 2 ∠ C .

∠ B A C

m

∠ B A C = m^{\circ}

D

B C

△ A B C

∠ A D C = ∠ B A C

C A^{2} = C B \times C D

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