Mathematics · Geometry

In ΔABC, AB = AC. If the interior angle at vertex A is 80° and the side BA is extended past A to a point D, what is the value of the exterior angle x (∠CAD)?

Verified Solution4 OptionsUpdated: October 2026👁️1 View

1130°✓
2120°
3100°
480°

Correct answer

130°

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In ΔABC, AB = AC. If the interior angle at vertex A is 80° and the side BA is extended past A to a point D, what is the value of the exterior angle x (∠CAD)?

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In ΔABC, AB = AC. If the interior angle at vertex A is 80° and the side BA is extended past A to a point D, what is the value of the exterior angle x (∠CAD)?

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