# types of triangles working model with LED Lights – maths tlm – maths working project – diy

Triangles are categorized based on their side lengths and angles.

Here are the main types of triangles:

1. Equilateral Triangle:
• All three sides are of equal length.
• All three angles are equal and measure 60 degrees.
• Example: An equilateral triangle with sides of 5 cm each.
2. Isosceles Triangle:
• Two sides are of equal length.
• The angles opposite the equal sides are also equal.
• Example: A triangle with two sides of 4 cm each and one side of 6 cm.
3. Scalene Triangle:
• All three sides have different lengths.
• All three angles are different.
• Example: A triangle with side lengths of 3 cm, 4 cm, and 5 cm.
4. Right Triangle:
• One angle is a right angle (90 degrees).
• The side opposite the right angle is called the hypotenuse.
• Example: A triangle with angles of 30 degrees, 60 degrees, and 90 degrees.
5. Acute Triangle:
• All angles are less than 90 degrees.
• Example: A triangle with angles measuring 45 degrees, 60 degrees, and 75 degrees.
6. Obtuse Triangle:
• One angle is greater than 90 degrees.
• Example: A triangle with angles measuring 45 degrees, 45 degrees, and 90 degrees.
7. Isosceles Right Triangle:
• It combines attributes of an isosceles triangle and a right triangle.
• One angle is a right angle, and two sides are of equal length.
• Example: A triangle with angles of 45 degrees, 45 degrees, and 90 degrees.
8. Equiangular Triangle:
• All three angles are equal, but the side lengths may vary.
• Example: A triangle with angles of 60 degrees, 60 degrees, and 60 degrees.
9. Degenerate Triangle (Collinear Points):
• A triangle with all three vertices lying on the same straight line.
• The sides have zero length.
• Example: Three points A, B, and C are collinear, forming a degenerate triangle.

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