The vertex angle of an isosceles triangle measures 40°. What is the measure of a base angle?

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elonjohn54 elonjohn54

18-08-2017
Mathematics

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The vertex angle of an isosceles triangle measures 40°. What is the measure of a base angle?

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kphung76127 kphung76127 · Answer 1 · 2017-08-18T18:54:32+02:00

kphung76127 kphung76127

18-08-2017

In all triangles, inner angles add to 180 degrees.
In an isosceles triangle, the base angles are the same and the vertex angle is different from the rest.

b= (180-40)/2
b= 140/2
b=70

Final answer: 70 degrees

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