IDENTIFYING TRIANGLES

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IDENTIFYING TRIANGLES They are everywhere. IDENTIFY TRIANGLES By sides By angles.

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Presentation transcript:

IDENTIFYING TRIANGLES They are everywhere.

IDENTIFY TRIANGLES By sides By angles The symbol for triangles is

Isosceles Triangle At least two sides are congruent.

Equilateral Triangle All sides are congruent.

Scalene Triangle No sides are congruent

Right Triangle Exactly 1 right angle

Acute triangle All the angles are acute angles.

Obtuse triangle Exactly 1 angle is obtuse.

Identifying Triangles

Perimeter of a triangle The sum of all the side lengths 3cm 3cm 4cm P=3+3+4=10cm

Angle sum With any triangle all the angles add up to 180°!

Let’s identify triangles! The following slides will show some triangles used in every day situations. On your own paper, identify each triangle using sides, angles or both.