Question

МА перпендикуляр до площини трикутника АВС. Визначте вид трикутникаАВС, якщо МВ перпендикулярна ВС.​

Answer 1

Ответ:

Прямоугольный.

Объяснение:

МА - перпендикуляр к плоскости АВС, МВ - наклонная к этой плоскости, тогда АВ - проекция наклонной МВ на плоскость АВС.

Теорема, обратная теореме о трех перпендикулярах:

• если наклонная к плоскости перпендикулярна некоторой прямой, лежащей в плоскости, то и ее проекция перпендикулярна этой прямой.

МВ ⊥ ВС, значит и АВ⊥ВС по теореме, обратной теореме о трех перпендикулярах.

ΔАВС - прямоугольный.

Answer 2

Perpendicular from M to the plane of triangle ABC

When a line is perpendicular to a plane, it means that the line is at a 90-degree angle to the plane. In this case, we have a line MV that is perpendicular to the plane of triangle ABC, where V is a point on the plane.

To determine the type of triangle ABC, we need to consider the relationship between the line MV and the sides of the triangle.

Type of triangle ABC when MV is perpendicular to VC

If MV is perpendicular to VC, it means that the line MV is perpendicular to the side VC of triangle ABC.

Based on this information, we can determine the type of triangle ABC. There are several types of triangles, including equilateral, isosceles, and scalene triangles.

- An equilateral triangle has all three sides of equal length. - An isosceles triangle has two sides of equal length. - A scalene triangle has all three sides of different lengths.

To determine the type of triangle ABC, we need more information about the lengths of the sides. Without additional information, we cannot determine the specific type of triangle ABC when MV is perpendicular to VC.

Please provide more information about the lengths of the sides of triangle ABC if you have it, so we can give a more specific answer.