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Questions and Answers
What is the total sum of the interior angles in any triangle?
What is the total sum of the interior angles in any triangle?
- 360°
- 180° (correct)
- 90°
- 270°
Which type of triangle has all sides of different lengths?
Which type of triangle has all sides of different lengths?
- Isosceles
- Scalene (correct)
- Right-angled
- Equilateral
Which of the following correctly describes an isosceles triangle?
Which of the following correctly describes an isosceles triangle?
- It has no equal sides
- It has three right angles
- Two sides are equal (correct)
- All sides are equal
In which type of triangle will you find all angles measuring less than 90°?
In which type of triangle will you find all angles measuring less than 90°?
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Which of the following statements about triangles is true?
Which of the following statements about triangles is true?
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Study Notes
Triangles
- A triangle is a polygon consisting of three sides, three vertices, and three angles.
- The sum of all interior angles in a triangle equals 180 degrees.
Types of Triangles Based on Sides
- Equilateral Triangle: All three sides are of equal length.
- Isosceles Triangle: Two sides have equal length, while the third side is different.
- Scalene Triangle: All sides are of different lengths.
Types of Triangles Based on Angle Measurement
- Acute Triangle: Contains three acute angles, each less than 90 degrees (e.g., angles of 35°, 85°, and 60°).
- Right Triangle: Contains one right angle, exactly measuring 90 degrees.
- Obtuse Triangle: Contains one obtuse angle, which is greater than 90 degrees (e.g., an angle of 140°).
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