asjiaambroise905 asjiaambroise905

18-08-2021
Mathematics

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A base angle of an isosceles triangle contains 75º. How large is the vertex angle?
(A) 75°
(B) 30°
(C) 1050
(D) 210°
(E) 40°

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malakzuhair17 malakzuhair17

18-08-2021

Answer is B, there are two equal base angles in an isosceles triangle, so given that ( 75+75 =150), the total of the interior angles in any triangle is 180, so 180-150 =30 ( which is the vertex angle) , the upper angle of the triangle.

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HUHROSIE HUHROSIE

18-08-2021

It’s B because it has to have a lower side plus it can’t be greater tag. 75 the. It will be inaccurate

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