#### Relation of corresponding angles

In the image you can see two parallel lines cut by a trasversal. What’s the relation between the angles α and β?

# Angles

Training
6

#### Relation of alternate angles

In the image you can see two parallel lines cut by a trasversal. What’s the relation between the angles α and β?

# Angles

Training
6

#### Angles of parallel lines

Which straight lines are parallel?

# Angles

Reasoning
6

#### Angles of a triangle

The relation between the 3 angles of a triangle is:
# Congruences & basic constructions
# Angles

Reasoning
6

#### Relation of opposite angles

What’s the relation between α and β?

# Angles

Training
6

#### Angles of a triangle

Three lines create a triangle. What’s the value of angle γ?

# Angles

Reasoning
6