what is the measure of the vertex angle?

a base angle of an isosceles triangle doubles that of the vertex angle.
in Geometry Answers by Level 1 User (220 points)

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1 Answer

????????????? "vertex angel" ????????????

????? yu meen the angel at the top ????????

Isosoleez triangel

?????????? yu tri tu sae 1 angel at botton=2* angel at top ??????????

then, ang + ang +(ang/2)=180

2.5 ang=180

ang=72 deg
by

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