Unit 4.1 Independent Practice--Classifying Triangles

Classify each triangle in the diagram below by its angles. ΔCDE: __________________________

• Acute

• Right

• Obtuse

• Classify triangle ΔCDE by its angles.

Classify each triangle in the diagram below by its angles. ΔBCE: __________________________

• Acute triangle

• Right triangle

• Obtuse triangle

• Equilateral triangle

Classify each triangle in the diagram below by its angles. ΔABE: __________________________

• ΔABE: Acute

• ΔABE: Right

• ΔABE: Obtuse

• ΔABE: Equilateral

Classify each triangle in the diagram below by its angles. ΔBDE: __________________________

• ΔBDE: Acute

• ΔBDE: Right

• ΔBDE: Obtuse

• ΔBDE: Equilateral

Classify each triangle in the diagram below by its sides. ΔJKN: __________________________

• Equilateral

• Obtuse.

• Scalene

• Isosceles

A triangle with three congruent sides is called

• Equilateral

• Scalene

• Isosceles

• Obtuse

A triangle with one angle measuring 114° is called

• right

• obtuse

• acute

• scalene

Classify the triangle with sides 15 in, 18 in, and 20 in by its angles and sides.

• Scalene

• Isosceles

• Acute

• Right

• Equilateral

If QN bisects ∠PQR and N is the midpoint of PR, classify ΔPQR by its angles and sides.

• Acute triangle

• Right triangle

• Equilateral

• Obtuse triangle

• Isosceles triangle

Classify ΔQST by its angles and sides. QT ≅ QS

• Acute triangle

• Scalene triangle

• Obtuse triangle

• Right triangle

• Isosceles triangle