Question

question number 4 please sir ji

Answer 1

4.
Solution-

Two angles in an isosceles triangle are equal.
Therefore
Since one of the two equal angles is given as 70°
The other equal angle will also be 70°
Now,
In any triangle,
According to the Angle sum property,

Angle A + Angle B + Angle C = 180°

Therefore, Angle C = 180-(70°+70°) = 180° - 140° = 40°

Answer 2

one angle of triangle = 70°
so, the sum of the other 2 angles = 180 - 70 = 110°
Other 2 angles are considered as x & x-20
& x + x-20 = 110
=> 2x - 20 = 110
=> 2x = 130
=> x = 130/2 = 65°
& x-20 = 65–20 = 45°
So, the other 2 angles are 65° & 45°
hope it helps you
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