Question

lesson 7: triangles
ng triangles by side length
elene triangle has ____
○ a. two equal angles
○ b. no sides equal in length
○ c. two sides equal in length
○ d. all three sides the same length
check answer

Explanation:

To solve this, we recall the definition of a scalene triangle. A scalene triangle is defined as a triangle where all sides are of different lengths (no sides are equal in length). Let's analyze each option:

• Option a: Two equal angles are a property of isosceles triangles (by the isosceles triangle theorem), not scalene.
• Option b: Matches the definition of a scalene triangle (no sides equal in length).
• Option c: Two sides equal in length is the definition of an isosceles triangle.
• Option d: All three sides the same length is an equilateral triangle.

Answer:

b. no sides equal in length