Classifying Triangles and Triangle Congruence

Are the triangles congruent? If yes, state how.

• SSS

• SAS

• ASA

• HL

• not congruent

Are the triangles congruent? If yes, state how.

• SSS

• SAS

• ASA

• HL

• not congruent

Are the triangles congruent? If yes, state how.

• SSS

• SAS

• AAS

• HL

• not congruent

Are the triangles congruent? If yes, state how.

• SSS

• SAS

• AAS

• HL

• not congruent

Classify ΔABE by its angles & sides

• Right Isosceles

• Acute Isosceles

• Right Scalene

• Obtuse Scalene

• Equilateral, Equiangular

Classify ΔBEC by its angles & sides

• Right Isosceles

• Acute Isosceles

• Right Scalene

• Obtuse Scalene

• Equilateral, Equiangular

Classify ΔDEF by its angles & sides

• Right Isosceles

• Acute Isosceles

• Right Scalene

• Obtuse Scalene

• Equilateral, Equiangular

Classify ΔCDF by its angles & sides

• Right Isosceles

• Acute Isosceles

• Right Scalene

• Obtuse Scalene

• Equilateral, Equiangular

Given the coordinates, classify ΔQRT by its sides

• Equilateral

• Isosceles

• Obtuse

• Scalene

Answer explanation

Remember to use the distance formula for the three sides of the triangle to determine the length.

Find the value of x