Special Triangles
What is a Triangle?
What is a Triangle?
Triangles are closed 3-sided plane figures with 3 interior angles. The
Triangles are closed 3-sided plane figures with 3 interior angles. The
There are 4 types of special triangles (See pictures below).
There are 4 types of special triangles (See pictures below).
Right-Angled Triangles: One of the angles is a right angle (90°).
Right-Angled Triangles: One of the angles is a right angle (90°).
Isosceles Triangles: 2 sides of the triangle are of equal length.
Isosceles Triangles: 2 sides of the triangle are of equal length.
Equilateral Triangles: All 3 sides of the triangle are of equal length.
Equilateral Triangles: All 3 sides of the triangle are of equal length.
Scalene Triangles: All sides of the triangle have different lengths.
Scalene Triangles: All sides of the triangle have different lengths.
Explore!
Explore!
Use the applet below to learn more about the different types of triangles.
Use the applet below to learn more about the different types of triangles.