Geometry

Triangles

Easy

From the figure, what is the value of x?

50°

120°

60°

70°

✅ Correct Option: 4

Using the exterior angle theorem: the exterior angle of a triangle equals the sum of the two non-adjacent interior angles.

Exterior angle at C = angle A + angle B

120° = 50° + x

Therefore, x = 70°.

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The area of triangle ABF is.

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From the figure, what is the value of x?

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