Polygons
A polygon with 3 angles and three vertices
What is a triangle?
Same size same shape
What is congruent?
A stop sign is in the shape of this polygon.
What is an octagon?
When a shape can be folded into matching sides.
What is symmetrical?
A square has this many lines of symmetry
What is four?
The point where two lines meet to form an angle
What is a vertex?
This is why a square is a rectangle but a rectangle isn't a square.
A rectangle only needs to have 4 right angles, but not always equal sides. A square has to have all equal sides and 4 ninety degree angles.
When split in half, a 100 degree angle makes two angles of this size...
How to describe two lines that intersect to form 90 degree angles.
What are perpendicular lines?
We could call a square by these other names.
What is a quadrilateral, rhombus, parallelogram, rectangle, quadrangle.
A large angle measures 130 degrees. It is spit into two smaller angles. One measures 40 degrees. The other smaller angle measures this many degrees.
What is ninety degrees?
A polygon cannot have these three attributes
What are
-Intersecting lines
-Curved Lines
-Gaps/Open spaces