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ABCand DBCars same side of BC. Are and DBC are both isosceles triangles on a common base BC such that A and D lie on the ide of BC. Are triangles ADB and ADC congruent? Which condition do you use? W 40° and 2 BDC=100°; then find ZADB. and A ABD are on a common base AB, and ACBD and BC AD as shown in Fig. 18.

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Q1

ABC and DBC are both isosceles triangles on a common base BC such that A and D lie on the same side of BC. Are triangles ADB and ADC congruent? Which condition do you use? If ∠BAC = 40° and∠BDC = 100°; then find ∠ADB.

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Q2

ABC and DBC are both isosceles triangles on a common base BC such that A and D lie on the same side of BC. Are triangles ADB and ADC congruent? Which condition do you use? If ∠BAC = 40° and∠BDC = 100°; then find ∠ADB.

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