Question

Triangle with length of side 7cm,8 cm,and 9cm what is name of this triangle

Answer 1

It has scalene triangle.

Answer 2

This is a Scalene triangle since the measure of all three sides is different.

Following are types of triangles on the basis of the length of the sides:

• Equilateral triangle: In this type of triangle, the length of all three sides is equal. All the three angles of this type of triangle are equal to 60°.
• Isosceles triangle: In this type of triangle, the length of the two sides equal. The angles in front of the two equal sides are also equal.
• Scalene triangle: In this type of triangle, the length of all the three sides is different.

Following are the types of triangles on the basis of the measure of angles:

• Acute-angled triangle: In this triangle, all angles are acute, i.e., less than 90°.
• Right-angled triangle: In this triangle, one angle is a right angle.
• Obtuse-angled triangle: In this triange, one angle is an obtuse angle, i.e., greater than 90°.

Therefore, the given triangle is scalene.