The sum of the vertical angles AND and CNB formed at the intersection of lines AB and CD is 208 degrees. Find the ANC angle.
| December 1, 2020 | education
1) add up to two triangles (AND and CNB)
2) angle AND = CNB = 208/2 = 104 degrees (property of vertical angles)
3) the angle ANC is the outer angle of the triangle and then ANC = 180-104 = 76 degrees
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