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The sum of two angels of …

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The sum of two angels of triangle is equal to its third angle, prove that triangle is right angled

Posted by Priya Rahad 7 years, 11 months ago

CBSE > Class 09 > Mathematics

1 answers

Anuska Thakur 7 years, 11 months ago

Angle 1=X Angle 2=y Angle 3=z According to question-: L1+L2 =L3 or x+y=z By able sum property-: L1+L2+L3=180 x+y+z=180 z+z=180 2z=180 z=180/2 z=90 As 1of the angle is equal to 90 degrees then the given triangle is right angled. Hence proved.....

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3√2×4√2×12√32

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CBSE > Class 09 > Mathematics