Mental geometry level 1

These are not interactive exercises -you need pen and paper to write your answers down.

Units of length (2)
with integers

Circumference
of a circle

Area
of a polygon

Does it belong
or not?

Parallel, intersecting
or perpendicular lines

Angles

Units of area (1)

Length
of a segment

Types of
triangle

Types of
quadrilateral

Units of area (2)

Perimeter
of a polygon

Units of length (1)
with decimal numbers

Axis of symmetry

Missing
measurements

Units of length (1)
with integers

Units of length (2)
with decimal numbers

Perimeter,
area or volume

Volume