Please help!!!! 20 POINTS!
1. How many triangles are inside a decagon?
8
9
10
11
2. Which of the following sets of numbers could be the sides of a triangle
6, 8, and 15
9, 13, and 17
2, 3, and 6
10, 10, and 20
3. Which type of triangle, if any, has side lengths of 11, 15, and 25?
equilateral triangle
isosceles triangle
scalene triangle
It's not a triangle.
