identify the contribution of angle which is left to form a triangle the answer is 25° 65°, and 90° and explain why
The contribution of the angle which is left to form a triangle is 25°.
In any triangle, the sum of the interior angles is always 180°. Therefore, if we have angles of 65° and 90° already formed, the angle left to complete the triangle must be 180° - (65° + 90°) = 25°.
So, the contribution of the angle which is left to form a triangle is 25°.