Draw a quadrilateral and mark any two outer angles. Is there any relation between the sum of these two and the inner angles at the other two vertices?
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3
Answer:
The sum of two interior angles at the same vertex = 360 – x. So the sum of the other two interior angles = x
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6
Answer:
Solution:
Sum of the angles of the quadrilateral = 360°
Sum of the exterior angles = 360°
Let the sum of two exterior angles = x
The sum of two interior angles at the same vertex = 360 – x. So the sum of the other two interior angles = x. So sum of two exterior angles at two vertices is equal to the sum of two interior angles at the other two vertices.
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