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चतुर्भुजों को समझना

Question

Wired Faculty App

दी गई आकृति में RISK तथा CLUE दोनों समांतर चतुर्भुज हैं, x का मान ज्ञात कीजिए।

Solution

RISK एक समांतर चतुर्भुज है

∴ $angle straight R space plus space angle straight K space equals space 180 degree$
$angle R italic space plus space angle 120 degree space equals space 180 degree space rightwards double arrow space angle 180 degree space minus space 120 degree space equals space 60 degree$

$angle R italic space plus space angle 120 degree space equals space 180 degree space rightwards double arrow space angle 180 degree space minus space 120 degree space equals space 60 degree$

angle straight R space और space angle straight S space

∴

space angle straight S space equals space 60 degree

increment

ESO में

angle E italic space plus space angle S italic space plus space x italic space equals space 180 degree

∴

space 70 degree space plus space 60 degree space plus space x italic space equals space 180 degree

x italic space equals space 180 degree space minus space 60 degree space minus space 70 degree

x italic space equals space 50 degree

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