# 4-1 Classifying Triangles. What Is a Triangle? A triangle is a three-sided polygon. Sides: Vertices: G, E, and O Angles: EO G.

## Presentation on theme: "4-1 Classifying Triangles. What Is a Triangle? A triangle is a three-sided polygon. Sides: Vertices: G, E, and O Angles: EO G."— Presentation transcript:

4-1 Classifying Triangles

What Is a Triangle? A triangle is a three-sided polygon. Sides: Vertices: G, E, and O Angles: EO G

Classifying Triangles by Angles Acute Triangle 3 acute angles Right Triangle 1 right angle Obtuse Triangle 1 obtuse angle Equiangular Triangle 3 congruent acute angles

The Right Triangle E O G Hypotenuse Leg Hypotenuse – the side opposite the right angle Legs – the sides opposite the acute angles

Classifying Triangles by Sides ScaleneTriangle No congruent sides Isosceles Triangle At least two congruent sides Equilateral Triangle Three congruent sides

The IsoscelesTriangle Legs – the two congruent sides Base – the non-congruent side Vertex Angle – the angle opposite the base Base angles – the angles opposite the legs (they are congruent) E O G Leg Base

Download ppt "4-1 Classifying Triangles. What Is a Triangle? A triangle is a three-sided polygon. Sides: Vertices: G, E, and O Angles: EO G."

Similar presentations