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Calculate the missing angles in each triangle using the triangle angle sum property.

Worksheet titled "Calculating Triangle Angles (A)" with six triangles, each showing two angles and asking to calculate the missing angle(s), with one triangle marked as isosceles.

Worksheet titled "Calculating Triangle Angles (A)" with six triangles, each showing two angles and asking to calculate the missing angle(s), with one triangle marked as isosceles.

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