Maths Triangle and Its Properties part 14 (Questions 2) CBSE Class 7 Mathematics VII

TL;DR

This video explains the properties of triangles and quadrilaterals, including how the lengths of sides relate to each other in a triangle and the range of possible values for the third side.

Transcript

hello friends this video on triangle and its properties part 14 is brought to you by exam feel calm no more fear from exam question number three ABCD is a quadrilateral what is a quadrilateral quad dream that is four so any polygon with four sides is called a quadrilateral is a B plus BC plus C V is da that is is sum of the four sides greater than ... Read More

Key Insights

• 🙃 A quadrilateral is a polygon with four sides.
• 🙃 In a triangle, the sum of the lengths of any two sides must be greater than the length of the third side.
• 🔺 The lengths of sides in a triangle determine whether it is a valid triangle.
• 🔺 The range of possible values for the length of the third side in a triangle can be determined by the properties of triangle inequality.
• 🙃 The range excludes the minimum value of the sum of the other two sides and includes the maximum value minus 1.
• 💁 The properties discussed in the video can be used to determine whether given lengths can form a triangle.
• 🥶 The video is part of a comprehensive learning platform covering various subjects and providing free education resources.

Questions & Answers

Q: What is a quadrilateral?

A quadrilateral is a polygon with exactly four sides.

Q: What is the property of a triangle regarding the lengths of its sides?

In a triangle, the sum of the lengths of any two sides must be greater than the length of the third side.

Q: How can we find the range of possible values for the length of the third side in a triangle?

To find the range of possible values for the length of the third side, we can use the properties that the sum of the two known sides must be greater than the third side, and the sum of any two sides must be greater than the third side.

Q: Can you give an example of finding the range of possible values for the length of the third side in a triangle?

Let's say the lengths of two sides are 12 centimeters and 15 centimeters. The range of possible values for the length of the third side would be from 4 centimeters to 26 centimeters.

Summary & Key Takeaways

• A quadrilateral is a polygon with four sides.

• The lengths of two sides of a triangle added together must be greater than the length of the third side.

• In a triangle, the third side must fall within a range of values to form a valid triangle.