By Jakob U. Kuhl

This is a isosceles triangle because it has 2 equal sides and 1 side

This is a pyramid because it has a point at the top and is 3d

This is a acute angle because it is less than 180 degreese

This is an equilateral triangle because it has all even sides

It is an obtuce angle because it s mor than 180 degreese

It is a right angle because it is 180 degreese

This is a rectangular prisimbecause it has two equal sides