Triangles #1

An obtuse triangle has (a)   ​

• one obtuse angle
• three obtuse angles
• two obtuse angle

Find the measure of the missing angle in the triangle. (just write the number)

Mathematical Equivalence

ON

Which triangle is an acute triangle?

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Which triangle is an obtuse triangle?

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Which triangle is a right triangle?

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Which triangle is an equilateral triangle?

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Which triangle is an scalene triangle?

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Which triangle is an isosceles triangle?

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Classify the triangle by its angle measures and its side lengths.

• Right Isosceles triangle

• Acute Scalene triangle

• Obtuse Equilateral triangle

• Acute Equilateral triangle

• Right, Scalene triangle

Which TWO words best describe this triangle?

• Right

• Acute

• Obtuse

• Isosceles

• Scalene