Naming Triangles and Angles

Choose the correct name for the angle marked \angle3.

Given the diagram, which of the following must be true?

• ∆XSF ≅ ∆XTG

• ∆SXF ≅ ∆GXT

• ∆FXS≅ ∆XGT

• ∆FXS ≅ ∆GXT

△BAC ≅ △QPR. If ∠B = 2x and ∠Q = 10, find the value of x.

• 2

• 4

• 5

• -5

Select the correct pair of corresponding triangles

• ACB and FEG

• CAB and FEG

• BAC and EFG

Angle y corresponds with which angle below:

• EGF

• EFG

• GEF

Classify this triangle by its sides and its angles. 

• obtuse scalene

• equilateral equiangular

• acute right

• right isosceles

Classify this triangle by its sides and angles. 

• right scalene

• obtuse equilateral

• right isosceles

• obtuse isosceles

Classify this triangle by its sides and angles. 

• right isosceles

• obtuse scalene

• equilateral equiangular

• obtuse isosceles

Classify this triangle by its angles.

• right

• equiangular

• acute

• obtuse

Classify this triangle by its sides and angles. 

• equilateral equiangular

• acute isosceles

• acute scalene

• right equilateral