Question

(25) Identify the type of triangle formed in ∆EFG with EF= 7 cm, FG = 8 cm and GE =9cm.

Answer 1

Answer:

scalene triangle

because scalene triangle has all side not equal

Answer 2

Answer:

Δ$EFG$ having sides are $EF=7$ cm, $FG = 8$ cm, $GE=9$ cm is a Scalene triangle.

Step-by-step explanation:

Given : The sides of Δ$EFG$ are $EF=7$ cm, $FG = 8$ cm, $GE=9$ cm.

To find : Identify the type of a triangle.

Solution :

• It is given that in a Δ$EFG$ , sides are $EF=7$ cm, $FG = 8$ cm, $GE=9$ cm.
• From the given data, it is clear that this triangle has three unequal sides.
• There are three types of triangle based on length of sides.  

          i) Equilateral triangle : All the three sides are of equal length.

         ii) Isosceles triangle : Two sides of a triangle are equal in length.

         iii) Scalene triangle : All the three sides are of different length.

• So, it is clear from the above data, that the triangle which has three different sides, is known as Scalene triangle.

• ∴ Δ$EFG$ having sides are $EF=7$ cm, $FG = 8$ cm, $GE=9$ cm is a Scalene triangle.