1.

A parallelogram is having one acute angle equal to 70°. Find its other angles.​

Answer»

In a parallelogram, the adjacent ANGLES are co-interior and the OPPOSITE angles are equal. So if ONE ANGLE is 70°, the angle opposite to this angle is 70°. And the angle adjacent to this angle is SUPPLEMENTARY to it. Therefore, the angles of the parallelogram are 70°, 110°, 70° & 110°



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