a right angle isosceles triangle abc is right angle at a then find the measure of <b
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In tri. ABC
Angles A + B + C = 180{ Angle sum property}
Angle B = Angle C { opposite angles of an isosceles triangle are equal }
B + C = 2B
A + 2B = 180
90 + 2B = 180
B = 180 - 90 / 2 = 90 / 2 = 45 DEGREES
Angles A + B + C = 180{ Angle sum property}
Angle B = Angle C { opposite angles of an isosceles triangle are equal }
B + C = 2B
A + 2B = 180
90 + 2B = 180
B = 180 - 90 / 2 = 90 / 2 = 45 DEGREES
mdsajjad12:
edit your ans pls
angle B = ( 180 -90 )/2 = 90/2 = 45
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