## All Tasks

#### Determining the angle

The two horizontal lines are parallel to each other.
Determine the angel α.
α = ___ °

# Angles

Training

6

#### Relation of 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 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