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The base angle of an isosceles triangle is 15 ° more than its vertical angle. find its each angle 40°40°,100°65°,65°,50°45°,45°,90° |
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Answer» let the VERTICAL ANGLE is x°In an isoscele TRIANGLE the TWO base ANGLES are equal.so each base angles are =(x+15)°sum of the angles of a triangle is 180°so,x+x+15+x+15=180=> 3x=180-30=150=> x=150/3=50so, vertical angle is 50° and each base angle is (50+15)°=65° |
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