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3 years ago

Does anyone know what I am missing to get the final mark? Any ideas would be much appreciated :)

Mathematics

1 answer:

Law Incorporation [45]3 years ago

5 0

Answer: Isosceles

<u>Step-by-step explanation:</u>

Given: AB || DE , BC is a transversal

∠ABC ≅ ∠BCE by Alternate Interior Angles Theorem --> ∠BCE = 80°

∠DCA, ∠ACB, & ∠BCA are supplementary --> ∠ACB = 50°

By the Triangle Sum Theorem, ∠A+∠B+∠C = 180° --> ∠CAB = 50°

Triangle is isosceles because ∠A ≅ ∠C

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