Triangles

How can you classify a triangle?

• by its sides and angles

• by its shape

• by its size

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What kind of triangle is this?

• Acute
• Right
• Obtuse
• Robot

Tags

CCSS.4.G.A.2

What kind of triangle is this?

• Acute
• Super
• Right
• Obtuse

Tags

CCSS.4.G.A.2

What kind of triangle is this?

• Acute
• Right
• Sparkly
• Obtuse

Tags

CCSS.4.G.A.2

How many acute angles must an acute triangle have?

• 2
• 1
• 4
• 3

Tags

CCSS.4.G.A.2

An EQUILATERAL triangle has ___________.

• 3 equal sides

• 4 equal sides

• no equal sides

• 2 equal sides

Tags

CCSS.4.G.A.2

A SCALENE triangle has _____________.

• 3 equal sides

• 4 equal sides

• no equal sides

• 2 equal sides

Tags

CCSS.4.G.A.2

An ISOSCELES triangle has _____________.

• 3 equal sides

• 4 equal sides

• no equal sides

• 2 equal sides

Tags

CCSS.4.G.A.2

An ACUTE triangle has ________________.

• 1 acute angle

• 2 acute angles

• 3 acute angles

• no acute angles

Tags

CCSS.4.G.A.2

An OBTUSE triangle has _____________.

• 1 obtuse angle

• 2 obtuse angles

• 3 obtuse angles

• no obtuse angles

Tags

CCSS.4.G.A.2