Triangle Review

Classify the triangle.

• scalene

• isosceles

• equilateral

• right

Classify the triangle.

• scalene

• right scalene

• equilateral

• right

• isosceles

• Equilateral Triangle

• Right Triangle

• Obtuse Triangle

What is the Triangle Inequality Theorem?

• The sum of two sides of a triangle must be greater than or equal to the third side.

• The sum of two smaller sides of a triangle must be greater than the longest third side.

• The sum of two sides of a triangle must be less than or equal to the third side.

• The sum of two sides of a triangle must be less than the third side.

Which set of angle measures could be the interior angles of a triangle?

• 25^o, 30^o, 35^o

• 35^o, 60^o, 75^o

• 45^o, 60^o, 75^o

• 60^o, 90^o, 120^o

Given three angle measures, how many triangles can you create?

• One unique triangle

• Multiple triangles

• No triangles

If angle A is 45 degrees, angle B is 45 degrees, and line AB is 5 cm, how many triangles can you create?

• Only 1 unique triangle

• Multiple triangles

• No triangles

How many triangles exist with the given angle measures?  55°, 45°, 90°

• No triangle exists
• Exactly one unique triangle exists
• More than one triangle exists

Which three lengths could be the lengths of the sides of a triangle?

• 12cm, 5cm, 17cm

• 10cm, 15cm, 24cm

• 9cm, 22cm, 11cm

• 21cm, 7cm, 6cm

Given are the lengths of two sides of a triangle. Find the range of lengths for the third side. 7 ft, 13 ft

• more than 6 but less than 20
• more than 20 but less than 6
• less than 6 but more than 20