Show that the sum of the four interior angle of a quadrilateral is 360 degree
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angle A + angle B = 180° (sum of adjucent angle is 180) {1}
angleC + angle D = 180°(sum of adjucent angle) {2}
add eq. (1) and (2)
angle A+angle B+angle C+ angle D=180+180
A+B+C+D=360°
hence,sum of all interior angles is 360
angleC + angle D = 180°(sum of adjucent angle) {2}
add eq. (1) and (2)
angle A+angle B+angle C+ angle D=180+180
A+B+C+D=360°
hence,sum of all interior angles is 360
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swatibhargav:
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