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alexira [117]
2 years ago
10

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 doin

g wrong ​

Mathematics
1 answer:
ladessa [460]2 years ago
7 0

Answer: isosceles

Step-by-step explanation:

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

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

Since sides opposite equal angles in a triangle are equal, AB=BC.

So, triangle ABC is <u>isosceles</u>

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