What do we call this point?
Vertex
These 2 Lines are:
Perpendicular
What is the relation between these 2 lines?
Intersecting Lines
These angles are:
Right Angles
This angle is:
Right Angle
Lines (AB) and (CD) are ___________.
Parallel
What do we call these 2 Lines?
Intersecting Lines
What is the relation between theses 2 Lines?
Parallel Lines
This angle is:
Obtuse Angle
We use a __________ to check right angles.
Set-square
These angles are:
Acute angles
What is the relation between these 2 Lines?
Perpendicular Lines
Lines (AB) and (CD) are _____________.
Perpendicular