if angle a and b are linear pair and a:b=2:3, then the measure of angle a and b are
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First we can take the ratio 2:3 as 2y and 3y , It is a linear pair so angle a + angle b=180° 2y+3y=180° 5y=180° y=180°/5 y= 36°Hence y=36°, 2y=2(36)= 72° 3y=3(36)=108°Hence the angles are 72°and 108°.
Let the angle a be 2x and b be 3xSum of linear pair =180°a+b=180°2x+3x=180°5x=180°x=180°/5x=36°The measure of a and b are 2×36° and 3×36°72° and 108°.