Question

Hello people ~

The sides of a triangle are 5, 12 & 13 units. Check if it has a right angle or not.
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Answer 1

Explanation:

The sides of triangle are 5,12 and 13

Here, the greatest side is 13

Therefore,

• 13²=5²+12²
• 169=25+144
• 169=169 (True)

Hence, these sides will form a right angled triangle.

Answer 2

`\qquad \qquad\huge \underline{\boxed{\sf Answer}}`

To check if the triangle is congruent or not, we have to see if they form Pythagorean triplet, that is :

sum of squares of smaller sides should be equal to square of the longest side.

let's check it out ~

`\qquad \sf  \dashrightarrow \: {5}^(2) + 12 {}^(2) = {13}^(2)`

`\qquad \sf  \dashrightarrow \: {25}^{} + 144 = 169`

`\qquad \sf  \dashrightarrow \: 169= 169`

Therefore, the sides 5, 12 and 13 forms a right angle.