Question

which of the following is a property of a scalene triangle? a. all angles are 90 degrees b. all sides are of different lengths c. two sides are of equal length d. all sides are of equal length

Explanation:

A scalene triangle is defined as a triangle where all three sides have different lengths. Option a is incorrect as a triangle with all angles \(90\) degrees would have angles summing to \(270\) degrees (since \(3\times90 = 270\)), but the sum of angles in a triangle is \(180\) degrees. Option c describes an isosceles triangle. Option d describes an equilateral triangle.

Answer:

B. All sides are of different lengths