math
what is a regular polygon
regular polygons have sides of equal lengths and angles of equal size
what is a polygon
polygons are closed plane figures with straight sides. A side is also called an edge.
what is a convex polygon
A convex plygon has all vertices pointing outwards and all interior angles are smaller than 180
what is a non-convex (concave) polygon
Has at least one vertex pointing inward and at least one interior angle bigger than 180
Name 5 polygons and the number of sides they have
triangle-3 sides
quadrilaterial-4 sides
pentagon-5 sides
hexagon-6 sides
heptagon-7 sides
octagon-8
nonagon-9
decagon-10
undecagon-11
dodecagon-12
What are the three triangles
Scalene
isosceles
equilaterial
What is the definition for a scalene triangle
3 different side
3 different angles
what is the definition for a isosceles triangle
2 equal sides
2 equal angles
what is the definition for a equilateral triangle
3 equal sides
3 equal angles (60 degrees)
how much does every triangle need to add up to
180 degrees
what is a parallelogram
2 pairs of parallel sides with equal lengths
2 pairs of matching angles
All interior angles add up to 360
simplify the algerbratic expressions
7b+4a-6b+a
1b+4a
simplify the algerbratic expressions
5a(2) +3a+2a(2) -2a
7a(2)+a
whats a pronumeral
The letters used in algebra and they stand for numbers
what is area
The anount of surface a shape covers
what is perimeter
The ouside of a 2d shape
what is a coefficient
The number in an expression