Question

Внешний угол треугольника равен....

Answer 1

Сумме двух внутренних, не смежных с ним.

Answer 2

Triangle's External Angle

The external angle of a triangle is equal to the sum of the two opposite internal angles. This means that if you extend one side of a triangle, the exterior angle is the angle between the extension and the adjacent side of the triangle.

The formula to find the measure of an external angle of a triangle is 180 degrees minus the measure of the corresponding internal angle.

Using the provided search snippets, we can find the following information: - Source states that the external angle of a triangle is 180 degrees. - Source mentions that the external angle of a triangle is 66 degrees. - Source provides the equation for finding the external angle of a triangle: 180 - internal angle = external angle. - Source gives an example where the external angle is calculated as 180 - 123 = 57 degrees. - Source provides an example where the external angle is 80 degrees. - Source mentions an external angle of 90 degrees. - Source states that the external angle is 736 degrees.

Based on the information from the search snippets, it's clear that the external angle of a triangle can vary based on the specific triangle and its internal angles. However, the general formula for calculating the external angle remains consistent: 180 degrees minus the measure of the corresponding internal angle.