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Angles of a triangle are in the ratio 4:6:5 the triangle is :(A) an acute angled triangle (B) an obtuse angled triangle (C) right angled triangle (D) isosceles triangle |
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Answer» Answer: correct option is (A) an ACUTE ANGLED triangle Step-by-step explanation: LET the ratio be x 4x,6x,5x EQUATION 1 sum of angles = 180° 4x+6x+5x=180° 15x =180° x=180/15 x=12 put value of x in equation 1 4x=4×12=48° 6x=6×12=72° 5x=5×12=60° so all angles are acute angles |
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