Two lines that are the same distance apart all along their length, the two lines never cross.
parallel
A 2D diagram that can be folded to make a 3D shape with no gaps or overlap.
net
How many degrees in half a right angle?
45 degrees
Four sides, four right angles, two lines of symmetry, two opposite sides are equal in length.
rectangle
Four sides, four right angles, four lines of symmetry, all sides are equal in length.
square
A 5-sided polygon
pentagon
An 8-sided polygon
octagon
A 3D shape with 4 triangular faces
tetrahedron
A quadrilateral that has two pairs of lengths that are parallel to each other; opposite sides are equal in length, no right angles, no lines of symmetry.
Parallelogram
A 6-sided polygon
hexagon
How many degrees in a right angle?
90 degrees
hình khối tứ diện (4 mặt)
tetrahedron
A triangle with all three sides the same lenghth, all three angles are equal.
regular triangle
A 7-sided polygon
heptagon
song song
parallel
The direction that hands move on a clock. (clockwise / anti-clockwise)
clockwise
Hình bình hành
Parallelogram