Add the squares of the two smaller sides. Is it equal to the square of the biggest side? If yes, it is a right angled triangle.
82 + 152 = 64 + 225 = 289
172 = 289
The same, so it is right angled.
Yes.
39
False. It can't be.In a right triangle, the sum of the squares of the two short sides is equal to the squareof the longest side.122 = 144152 = 225-------------sum = 369202 = 400, not 369.So these are not the sides of a right triangle.
a scalene triangle is a triangle with three differant sides
do you have an angle measure? (if it is an equilateral triangle all legs will be 8 but i don't think this applies in your case)
Yes.
A scalene triangle
Yes.
yes
Yes they do. We find this by applying the pythagorean theorum. Since 9^2 + 12^2 = 15^2, they form a right triangle.
The lengths of the legs of a right triangle are 15 cm and 20 cm. What is the length of the hypotenuse?
No
No.
The length of the hypotenuse of a right triangle with legs of lengths 5 and 12 units is: 13The length of a hypotenuse of a right triangle with legs with lengths of 5 and 12 is: 13
17
39
Any number between 3 and 15