Understanding Scalene Triangles

The video tutorial from MooMooMath discusses scalene triangles, which are defined by having all sides and angles of different lengths and measures. The instructor provides examples of scalene triangles, both by sides and angles, and contrasts them with equilateral and isosceles triangles. The video concludes with a summary of the rules defining scalene triangles, using a 3, 4, 5 triangle as an example.

What is a key characteristic of a scalene triangle?

• All sides are equal

• All angles are equal

• All sides and angles are different

• Two sides are equal

Which of the following side lengths can form a scalene triangle?

• 3 inches, 3 inches, 3 inches

• 4 inches, 4 inches, 5 inches

• 3 inches, 4 inches, 5 inches

• 5 inches, 5 inches, 5 inches

How can you identify an equilateral triangle?

• All sides are different

• All angles are different

• All sides are the same

• Two sides are the same

Which triangle is not scalene based on angles?

• A triangle with angles 60°, 30°, 90°

• A triangle with angles 45°, 45°, 90°

• A triangle with angles 50°, 60°, 70°

• A triangle with angles 30°, 60°, 90°

What makes a triangle isosceles?

• All sides are different

• Two sides are equal

• All angles are different

• All sides are equal

Which of the following angle sets represents a scalene triangle?

• 60°, 60°, 60°

• 45°, 45°, 90°

• 60°, 30°, 90°

• 90°, 45°, 45°