Classify a triangle with sides 5, 5, 8

Step by step

The question

Question: find what kind of triangle has sides 5, 5, 8.

1 Compare the sides

There are three names, from how many sides are equal.

Two sides are 5.

They are equal.

The third side, 8, is different.

Marks show the equal sides.

Careful!

Two equal sides is enough for isosceles.

2 Name it

So the triangle is isosceles.

3 Check

Let's check: count the equal sides on the picture: 2.

That is isosceles.

Let's look back.

First: compare the sides.

Then: name it.

Last: check.