A triangle with all three sides the same lenghth, all three angles are equal.
regular triangle
20
Two lines that are the same distance apart all along their length, the two lines never cross.
parallel
20
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
20
Hình bình hành
Parallelogram
15
A 5-sided polygon
pentagon
15
A 6-sided polygon
hexagon
15
A 7-sided polygon
heptagon
15
An 8-sided polygon
octagon
15
song song
parallel
15
How many degrees in a right angle?
90 degrees
15
How many degrees in half a right angle?
45 degrees
15
A 2D diagram that can be folded to make a 3D shape with no gaps or overlap.
net
15
The direction that hands move on a clock. (clockwise / anti-clockwise)
clockwise
15
hình khối tứ diện (4 mặt)
tetrahedron
15
Four sides, four right angles, four lines of symmetry, all sides are equal in length.
