Question

This average of two non-ac
angles of on isosceles triangle is 65 so find the value of these two non congruent angles.
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Answer 1

Answer:

100° & 30°

Step-by-step explanation:

suppose A,B,C are the angles of the isosceles triangle

then we know here 2 angles must be equal

so let's take A=B=x° & C=y°

then the average of 2 non - congruent angles .. so ...here.. (A+C)/2 = 65

A+C = 130......(i)

so.. B = 180° - (A+C)

= 180 - 130

= 50°.... so A=B= 50°(answer)

then C = 130-100

= 30°(answer)