Question

does 7cm, 8 cm, 9 cm form a right angle triangle​

Answer 1

Step-by-step explanation:

→ No the sides of length 7cm, 8cm and 9cm cannot form a Right Angled Triangle. If we try joining these sides of given length, it will form an incomplete triangle.

Answer 2

$\huge\bold{Solution}$

Something you need to know

• Sum of 2 sides of a triangle is always equal or greater than the third side of a triangle.

• If the square of 2 sides of triangle is equal to the third side then, it is a right angled triangle.

Given lengths include 7cm, 8cm and 9cm

$\Large{\underline{\underline{\bf{Let :-}}}}$

• AB = 7 cm
• BC = 8 cm
• CA = 9 cm

$\Large{\underline{\underline{\bf{Now,}}}}$

• AB² = 7² cm = 49 cm
• BC² = 8² cm = 64 cm
• CA² = 9² cm = 81 cm

The sum of 2 smaller sides (AB and BC) is not equal to CA.

Hence, it is not a right angled triangle.

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Hope it's helpful :)