Question

Зовнішній кут трикутника дорівнює 20 градусів. Визначте вид трикутника, якщо це можливо.

Answer 1

Гострокутний трикутник

Answer 2

Triangle Classification Based on External Angle

The external angle of a triangle is the angle formed by extending one of its sides. In this case, if the external angle of a triangle measures 20 degrees, we can determine the type of triangle based on this information.

Classification of Triangle: Based on the given external angle of 20 degrees, we can determine the type of triangle as follows:

1. Acute Triangle: If the external angle of a triangle is less than 90 degrees, then the triangle is an acute triangle. 2. Right Triangle: If the external angle of a triangle is exactly 90 degrees, then the triangle is a right triangle. 3. Obtuse Triangle: If the external angle of a triangle is greater than 90 degrees but less than 180 degrees, then the triangle is an obtuse triangle.

Conclusion

Based on the given information, the type of triangle cannot be definitively determined without additional information about the other angles of the triangle.