### Home > GC > Chapter 1 > Lesson 1.3.3 > Problem1-123

1-123.

The four triangles below are placed in a bag. If you reach into the bag without looking and pull out one triangle at random, what is the probability that: Homework Help ✎

1. the triangle is scalene?

2. the triangle is isosceles?

3. at least one side of the triangle is $6$ cm?

For part (a), remember that a scalene triangle has no equal sides.
For part (b), remember that an isosceles triangle has two equal sides.

For part (c) use the formula:

$\frac{\# \text{ of triangles that has at least one side equal to 6 cm}}{\text{total }\# \text{ of triangles}}$

$\text{P(side of the triangle is 6 cm)}=\frac{2}{4}=\frac{1}{2}$