prove that all the angles of a rectangle is 90°
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As we know that all the angles of rectangle are equal,
So,
Let the angles be x°each
We know that,
x+x+x+x = 360° (sum of all the angles of a parallelogram;here rectangle)
4x = 360°
x = 360°÷4
x = 90 °
Hence, proved.
So,
Let the angles be x°each
We know that,
x+x+x+x = 360° (sum of all the angles of a parallelogram;here rectangle)
4x = 360°
x = 360°÷4
x = 90 °
Hence, proved.
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