Maths Triangle and Its Properties part 2 (Types of Triangle) CBSE Class 7 Mathematics VII | Summary and Q&A

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October 17, 2016
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Maths Triangle and Its Properties part 2 (Types of Triangle) CBSE Class 7 Mathematics VII

TL;DR

This video explains the different types of triangles based on their sides and angles.

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Questions & Answers

Q: What are the three types of triangles based on the length of their sides?

The three types of triangles based on the sides are scalene (with unequal sides), isosceles (with two equal sides), and equilateral (with all sides equal).

Q: How are angles classified in triangles?

Angles in triangles can be classified as acute (less than 90°), right (one angle is 90°), or obtuse (one angle is greater than 90°).

Q: What is an isosceles triangle?

An isosceles triangle has two equal sides and two equal angles (base angles) located on the base.

Q: Can a triangle have two angles of 90°?

No, a triangle cannot have two angles of 90° as it would not form a closed figure. A triangle can only have three sides and three angles.

Summary & Key Takeaways

  • There are three types of triangles based on the sides: scalene, where all sides are unequal; isosceles, where two sides are equal; and equilateral, where all sides are equal.

  • Triangles can also be classified based on their angles: acute angled, where all angles are less than 90°; right angled, where one angle is 90°; and obtuse angled, where one angle is greater than 90°.

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