Types of Triangles
Classify triangles based on side lengths and angle measures. Look for acute, obtuse and right angles and identify equal sides.
You are watching: How many vertices are in a triangle
What is a Triangle?
In geometry, a triangle is a closed, two-dimensional shape with three straight sides. A triangle is also a polygon.
We can find the shape of a triangle in a flag, the musical instrument triangle, and a roadside signboard.
Properties of a Triangle
Different Types of Triangles
To classify triangles according to their angles, we measure each of its interior angles. Triangles can be classified by angles, as:
|Acute Triangle||Right Triangle||Obtuse Triangle|
An acute triangle has all interior angles acute (less than 90°), a right triangle has one right angle (equal to 90°) and an obtuse triangle has one obtuse angle (greater than 90°).
See more: What Is Niall Horan'S Favorite Food ? Favourite Food Items
To classify the triangles according to their sides, we measure the length of each of its sides. Triangles can be classified by their sides, as:
|Equilateral Triangle||Isosceles Triangle||Scalene Triangle|
To classify triangles according to both angles and sides, we measure the interior angles and length of the sides of the triangle. Few examples of triangles classified on the basis of both angles and sides are:
|Acute Equilateral Triangle||Right Isosceles Triangle||Obtuse Scalene Triangle|
|Fun FactsA triangle can always be split into two right triangles, irrespective of its orientation.Triangles are polygons with the least number of sides.|
Jenna loves triangles!
Tiny triangles on her blouse,
The red roof of her dollhouse,