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I need help

 Nov 29, 2018
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Minor Arc  AB  = (2) 72  = 144°

[  A tangent  meeting a chord forms an angle half that  of the arc intercepted by the chord ]

 

Angle C  =  (1/2) measure of minor arc AB = (1/2) 144 = 72°

[ C is an inscribed angle.....its measure is 1/2 the measure of its intercepted arc

 

Angle A =  180 - 72 - 54  =  54°

[ The sum of the interior angles of a triangle = 180° ]

 

So.....triangle ABC is isosceles because angles A and B are equal

 

 

cool cool cool

 Nov 29, 2018

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