Podcast
Play an AI-generated podcast conversation about this lesson
Download our mobile app to listen on the go
Get App
Questions and Answers
Which type of triangle has all three sides equal?
Which type of triangle has all three sides equal?
- Acute Triangle
- Isosceles Triangle
- Scalene Triangle
- Equilateral Triangle (correct)
What is the classification of a triangle with one angle measuring exactly 90 degrees?
What is the classification of a triangle with one angle measuring exactly 90 degrees?
- Acute Triangle
- Obtuse Triangle
- Isosceles Triangle
- Right Triangle (correct)
Which type of triangle has no sides of equal length?
Which type of triangle has no sides of equal length?
- Isosceles Triangle
- Equilateral Triangle
- Scalene Triangle (correct)
- Right Triangle
An acute triangle is characterized by which of the following?
An acute triangle is characterized by which of the following?
Signup and view all the answers
What is true about the angles of a right triangle?
What is true about the angles of a right triangle?
Signup and view all the answers
A triangle where two sides are equal can be classified as which type of triangle?
A triangle where two sides are equal can be classified as which type of triangle?
Signup and view all the answers
An isosceles triangle has all three sides of equal length.
An isosceles triangle has all three sides of equal length.
Signup and view all the answers
A triangle can have multiple right angles.
A triangle can have multiple right angles.
Signup and view all the answers
Scalene triangles have at least two sides of equal length.
Scalene triangles have at least two sides of equal length.
Signup and view all the answers
An obtuse triangle contains an angle greater than 90 degrees.
An obtuse triangle contains an angle greater than 90 degrees.
Signup and view all the answers
All angles in an acute triangle measure exactly 90 degrees.
All angles in an acute triangle measure exactly 90 degrees.
Signup and view all the answers
Equilateral triangles can be classified as acute triangles.
Equilateral triangles can be classified as acute triangles.
Signup and view all the answers
Flashcards are hidden until you start studying
Study Notes
Classification of Triangles by Sides
- Triangles can be classified based on the lengths of their sides.
- Equilateral Triangles: All three sides are equal; represented by marking each side with the same symbol.
- Isosceles Triangles: Two sides are equal; any combination of two sides can be equal while the third side is different.
- Scalene Triangles: No sides are equal; each side has a different length.
Classification of Triangles by Angles
- Triangles can also be classified based on the measures of their angles.
- Acute Triangles: All angles are less than 90 degrees.
- Right Triangles: One angle is exactly 90 degrees; also called right-angled triangles.
- Obtuse Triangles: One angle is greater than 90 degrees, making it obtuse.
Important Angle Facts
- An angle less than 90 degrees is termed acute.
- An angle exactly 90 degrees is a right angle.
- An angle greater than 90 degrees is an obtuse angle.
Additional Notes
- In a right triangle, only one angle can be right; having two right angles is not possible within a triangle's geometric constraints.
Classification of Triangles by Sides
- Triangles can be categorized based on side lengths.
- Equilateral Triangles: All sides are identical in length, denoted by the same symbol on each side.
- Isosceles Triangles: Two sides have equal lengths; the third side differs, allowing for various combinations of equal sides.
- Scalene Triangles: All sides are distinct in length, with no equality among them.
Classification of Triangles by Angles
- Angles also serve as a basis for triangle classification.
- Acute Triangles: Each of the three angles measures less than 90 degrees, resulting in all acute angles.
- Right Triangles: One angle measures exactly 90 degrees; commonly referred to as right-angled triangles.
- Obtuse Triangles: One angle exceeds 90 degrees, categorizing it as obtuse and impacting the overall shape.
Important Angle Facts
- An angle measuring less than 90 degrees is identified as acute.
- An angle measuring precisely 90 degrees is defined as a right angle.
- An angle that measures more than 90 degrees is considered obtuse.
Additional Notes
- In any right triangle, only one angle can be a right angle; having two right angles contradicts geometric principles.
Classification of Triangles by Sides
- Triangles can be categorized based on side lengths.
- Equilateral Triangles: All sides are identical in length, denoted by the same symbol on each side.
- Isosceles Triangles: Two sides have equal lengths; the third side differs, allowing for various combinations of equal sides.
- Scalene Triangles: All sides are distinct in length, with no equality among them.
Classification of Triangles by Angles
- Angles also serve as a basis for triangle classification.
- Acute Triangles: Each of the three angles measures less than 90 degrees, resulting in all acute angles.
- Right Triangles: One angle measures exactly 90 degrees; commonly referred to as right-angled triangles.
- Obtuse Triangles: One angle exceeds 90 degrees, categorizing it as obtuse and impacting the overall shape.
Important Angle Facts
- An angle measuring less than 90 degrees is identified as acute.
- An angle measuring precisely 90 degrees is defined as a right angle.
- An angle that measures more than 90 degrees is considered obtuse.
Additional Notes
- In any right triangle, only one angle can be a right angle; having two right angles contradicts geometric principles.
Studying That Suits You
Use AI to generate personalized quizzes and flashcards to suit your learning preferences.
