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Questions and Answers
What is the sum of the interior angles of a triangle?
What is the sum of the interior angles of a triangle?
- 360 degrees
- 180 degrees (correct)
- 270 degrees
- 90 degrees
In a right-angled triangle, what is the relationship between the lengths of the sides?
In a right-angled triangle, what is the relationship between the lengths of the sides?
- The length of the hypotenuse is always half of the other two sides
- The length of the hypotenuse is equal to the sum of the other two sides (correct)
- One side is the sum of the other two sides
- The length of the hypotenuse is equal to the difference of the other two sides
What is the name of a triangle with all sides of different lengths?
What is the name of a triangle with all sides of different lengths?
- Equilateral triangle
- Right-angled triangle
- Isosceles triangle
- Scalene triangle (correct)
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Study Notes
Geometry Essentials
- The sum of the interior angles of a triangle is 180 degrees.
Right-Angled Triangles
- The Pythagorean theorem describes the relationship between the lengths of the sides in a right-angled triangle: a² + b² = c², where a and b are the lengths of the legs, and c is the length of the hypotenuse.
Triangle Classification
- A triangle with all sides of different lengths is called a scalene triangle.
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