What are the 12 types of triangles?

Triangle is one of the topics in geometry. The word ‘Tri’ in a triangle indicates three. Yes, Triangle is designed with three lines and is shaped as a closed curve with three lines. Each line is considered as a side of the triangle. Totally, one triangle has three sides or faces. The points, where the two sides of the triangle are intersected that particular points are called vertices and the angles are formed at the point of vertices. Symbol of Triangle The symbol of the triangle is a closed loop with three sides. Here, the name of the triangle is XYZ. Properties of the Triangle Have a glance at the Properties of Triangle listed below and they are along the lines • Basically, the triangle has three sides. Here, the sides of the triangle are XY, YZ, and ZX. • The vertices of the triangle are X, Y, and Z. • Angles of the triangle are XYZ, YXZ, and XZY. • The sum of the three angles is equal to 180°. • The sum of any two sides of the triangle must be greater than the third side of the triangle. That is, XY + YZ = ZX or YZ + ZX = XY or XY + XZ = YZ. • In Triangles, we have two types of angles. They are interior angles and exterior angles. Interior angles are formed inside of the intersected point of the sides. Exterior angles are formed outside of the intersected points of the sides. Also, Read: • • • Area of a Triangle Area of the Triangle is equal to 1 / 2 * base * height. Here, Area is denoted by ‘A’, the base is denoted by ‘b’ and the height is denoted by ‘h’. Area (A) = ...

The Lesson There are different types of • • Type of Triangle by Lengths of Sides Triangles are a different type depending on how many sides are the same length (which is also how many angles are equal). Triangles are equilateral, isosceles or scalene depending on whether 3, 2 or 0 side lengths and angles are equal. Equilateral Triangles 3 equal side lengths and angles. 3 sides are equal lengths. 3 angles are equal (60°). Isosceles Triangles 2 equal side lengths and angles. 2 sides are equal lengths. 2 angles are equal. Scalene Triangles 0 equal side lengths and angles. 0 sides are equal lengths. 0 angles are equal. Interactive Game on the Types of Triangle Here is an interactive game to help you learn about the types of triangle. • Click on a triangle so it drops into the correct "bucket." • In total, there are 10 triangles to clear. • If a triangle drops into the wrong "bucket," you will lose one of your three lives. • Good luck! Type of Triangle by Angles Triangles are a different type depending on the size of the angles inside the triangle. Triangles are acute, obtuse or right triangles depending on whether all angles are acute (less than 90°), one angle is obtuse (more than 90°) or one angle is a right angle (90°). Acute Triangles Acute triangles have all acute angles (less than 90°). 3 angles are less than 90°. Obtuse Triangles Obtuse triangles have one angle that is obtuse (more than 90°, less than 180°). 1 angle is more than 90°. 2 angles are less than 90°. Right Tr...

Saul Gravy/Getty Images A triangle is a polygon that has three sides. From there, triangles are classified as either right triangles or oblique triangles. A right triangle has a 90° angle, while an oblique triangle has no 90° angle. Oblique triangles are broken into two types: acute triangles and obtuse triangles. Take a closer look at what these two types of triangles are, their properties, and formulas you'll use to work with them in math. Ivan De Sousa/EyeEm/Getty Images Obtuse Triangle Definition An obtuse triangle is one that has an angle greater than 90°. Because all the angles in a triangle add up to 180°, the other two angles have to be acute (less than 90°). It's impossible for a triangle to have more than one obtuse angle. Properties of Obtuse Triangles • The longest side of an obtuse triangle is the one opposite the obtuse angle vertex. • An obtuse triangle may be either isosceles (two equal sides and two equal angles) or scalene (no equal sides or angles). • An obtuse triangle has only one inscribed square. One of the sides of this square coincides with a part of the longest side of the triangle. • The area of any triangle is 1/2 the base multiplied by its height. To find the height of an obtuse triangle, you need to draw a line outside of the triangle down to its base (as opposed to an acute triangle, where the line is inside the triangle or a Obtuse Triangle Formulas To calculate the length of the sides: c 2/2 1/a 2+ 1/b 2 For an obtuse triangle with angles ...