Y5 Naming Angles Revision

What is the point called where two rays meet to form an angle?

• Arm

• Vertex

• Base

• Edge

Which symbol is used to stand for an angle?

• ∆

• ∠

• ⊥

• ≈

When naming an angle with three letters, which letter is always the vertex?

• The first letter

• The last letter

• The middle letter

• Any letter

How many different ways can you name an angle in a triangle?

• 1

• 2

• 3

• 4

Which of the following is a correct way to name the angle at point X in triangle XYZ?

• ∠X or ∠ZXY or ∠YXZ

• ∠Y or ∠XYZ or ∠YXZ

• ∠Z or ∠YXZ or ∠XYZ

• ∠W or ∠XYZ or ∠YXZ

In the diagram with points A, B, C, and d, which of the following is NOT a correct way to name the marked angle?

• ∠d

• ∠ABC

• ∠CBA

• ∠BAC

What are the arms and vertex of the angle in the diagram with points A, O, and C?

• Arms: OA and OC, Vertex: O

• Arms: AO and CO, Vertex: A

• Arms: AC and OA, Vertex: C

• Arms: OA and AC, Vertex: O

What are the arms of the angle shown in the fan diagram?

• E F and F G

• E G and F E

• F G and G E

• E F and G F

What is the vertex of the angle in the fan diagram?

• Point n

• Point E

• Point G

• Point F

How can you also name angle a in the quadrilateral EFGH?

• ∠EFG

• ∠HEF

• ∠FGH

• ∠HGF