The triangle shown in the image is an isosceles triangle. This can be identified by the two equal sides, as indicated by the identical markings on two of the triangle's edges. In an isosceles triangle, at least two sides are of equal length, and the angles opposite those sides are also equal.

Would you like further details on the properties of isosceles triangles or any other related topic?

Here are five related questions you might find interesting:

1. What are the properties of an isosceles triangle?
2. How do you calculate the area of an isosceles triangle?
3. What distinguishes an isosceles triangle from an equilateral triangle?
4. How can you find the angles in an isosceles triangle if the side lengths are known?
5. Can an isosceles triangle be a right triangle?

Tip: In geometry, always check the markings on the sides or angles of a shape to identify key properties.