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What type of triangle is triangle ABC give reasons for your answer help please I need 1 more mark But I don't know what I'm doing wrong ​

What type of triangle is triangle ABC give reasons for your answer help please I need 1 more mark But I dont know what Im doing wrong class=

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Medunno13

Answer: isosceles

Step-by-step explanation:

By the alternate interior angles theorem, [tex]\angle CAB=50^{\circ}[/tex]

Since angles in a triangle add to 180 degrees, [tex]\angle ACB=180^{\circ}-80^{\circ}-50^{\circ}=50^{\circ}[/tex]

Since sides opposite equal angles in a triangle are equal, [tex]AB=BC[/tex].

So, triangle ABC is isosceles

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