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19. ABCD is a parallelogram in which the two diagonals are equal,find the measure of ZABC. Is the parallelogram a rectangle? |
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Answer» In a parallelogram if two diagonals are equal, then the parallelogram is a rectangle. so, ABCD is a rectangle.it is known that each interior angle of a rectangle is 90°.since Abc is an interior angle of rectangle ABCD , so measure of angle ABC is 90° 90°yes it is a rectangle measure of each angle of rectangle is 90° |
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