2 years ago

I need help please I will mark you brainlists

Mathematics

1 answer:

V125BC [204]2 years ago

6 0

Answer:

2. ΔABC is isosceles

Step-by-step explanation:

Given : m∠A = 50

m∠BCD = 180 - (m∠BDC + m∠DBC)

= 180 - (100 + 30)

= 50

then

m∠A = m∠BCD

therefore ΔABC is isosceles

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