Question

In an isosceles triangle, one angle is 50°. The other two angles are of
(i) 65° and 65° (ii) 50° and 80° (iii) any measure
In the given option(s) which of the above statement(s) are true?
(a) (i) only
(b) (ii) only
(c) (iii) only
(d) (i) and (ii)

Answer 1

Answer:

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Option a   (i) only

Step-by-step explanation:

By angle sum property, sum of all three angles of a triangle is 180°.

And in isosceles triangle, two angles of the triangle are equal.

and in this case the unequal side is given.

Hence

50°+x+x=180°

2x=130

x=65

and hence angles of the triangle are 50,65 and 65.