Which is the best definition of a scalene triangle?

B A triangle in which no two sides are congruent is scalene

Step-by-step explanation:

A triangle that has 3 congruent sides is an equilateral triangle

A triangle in which no two sides are congruent ( no sides are the same) is a scalene triangle

A triangle that has at least two congruent sides is an isosceles triangle

the answer is (4,3)

since the rule for r0, 90º is (-y,x) and it was already applied to form the image, all you have to do is reverse the answer using this formula.

< coa = 150 ( given)

as ba and bc are tangents

so oc and oa is perpendicular to cb and ab respectively because in circle normal passes through centre

so in quadrilateral oabc

< coa + < oab + < ocb + < abc = 360

150 +90+90 + < abc = 360

330 + < abc = 360

< abc = 360 -330 = 30

so < abc = 30

⭐dhruv⭐