Triangle Definition: A triangle is a closed 2-dimensional shape formed by joining 3 line segments.
A triangle has 3 angles, 3 sides, and 3 vertices.
Sum of all angles of a triangle is 180 degree.
The points where the sides of a triangle meet are known as the corner/vertex of the triangle. More than one vertex are called vertices.
The angle formed at each of the vertices of the triangle are known angles of triangles.
Obtuse Scalene Triangle
This article was originally published on The splash math. Read the original article.
Source:
https://www.splashmath.com/math-vocabulary/geometry/triangle
A triangle has 3 angles, 3 sides, and 3 vertices.
Sum of all angles of a triangle is 180 degree.
Parts of a Triangle
The line segments joined to form a triangle are known as the sides of the triangle.The points where the sides of a triangle meet are known as the corner/vertex of the triangle. More than one vertex are called vertices.
The angle formed at each of the vertices of the triangle are known angles of triangles.
Classification of Triangles
A triangle is classified by its sides and by its angles.Triangles
Classification of Triangles Based on Sides
- Equilateral Triangle have All sides are equal and All angles are equal and measure 60°.
- Isosceles Triangle have 2 sides are equal and Angles opposite to equal sides are equal.
- Scalene Triangle have No side or angle are equal.
Classification of Triangles Based on Angles
- Acute Triangle have All angles measure < 90°
- Right Triangle have One angle measure = 90°
- Obtuse Triangle have One angle measure > 90°
Classification of Triangles Based on angles and sides
Right Isosceles Triangle- One angle measure = 90°
- Two sides are equal.
Obtuse Scalene Triangle
- All angles measure < 90°
- All sides are equal.
This article was originally published on The splash math. Read the original article.
Source:
https://www.splashmath.com/math-vocabulary/geometry/triangle
