Question

the length of three side of the triangle is 2cm,2cm,5cm can we forma right angle​

Answer 1

Answer:

No

Step-by-step explanation:

if it is a right triangle, then sum of squares of two sides = square of other side

• 2²+2² = 4 + 4 ≠ 5² which is 25
• 2² + 5² = 4 + 25 ≠ 2² which is 4

Answer 2

Answer:

No

Step-by-step explanation:

Since 5 is the longest side,We can use Pythagoras theorem to solveit

AB= 2cm

BC=2cm

AC= 5cm

AC=

$\sqrt{AB^{2} + BC^{2} } \\\sqrt{2^{2} +2^{2} } \\\sqrt{4+4}\\\sqrt{8}$

= 4

Thus you cannot make a triangle with sides 2,2, and 5cm

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