Identification of Types of Triangles - JSS1 Mathematics Lesson Note

Equilateral Triangle:

Definition: All three sides and angles are equal.

Angle properties: Each angle measures 60 degrees. Total: 60∘+60∘+60∘=180∘

Isosceles Triangle:

Definition: At least two sides and angles are equal.

Angle properties: The angles opposite the equal sides are equal. Total: Varies depending on specific angles but always sums up to 180∘.

Scalene Triangle:

Definition: All sides and angles are different.

Angle properties: The angles vary, but their sum is always 180∘