Answer:
No, it is not a right triangle
Step-by-step explanation:
<em>Lets explain how to check the sides lengths which formed a right angled triangle
</em>
In triangle ABC
:
- If AC is the longest side in length
- Then, AB , BC , AC formed a right angle triangle in ∠B (opposite to AC) is a right angle and AC is the hypotenuse
The lengths of the sides of the triangle are 13 km, 18 km, 20 km
∵ The length of the longest sides is 20 km
- Find its square
∵ (20)² = 400
∴ The square of the length of the longest side is 400
∵ The length of the shortest sides are 13 km and 18 km
- Find the sum of their squares
∵ (13)² + (18)² = 169 + 324 = 493
∴ The sum of the squares of the lengths of the shortest sides is 493
∵ 400 ≠ 493
∴ The sides of 13 km, 18 km and 20 km <em>CAN NOT</em> be sides of
a right triangle
No, it is not a right triangle
