Geometry

Rhombi

opp sides paraell opp sides congruent consecutiive angles are supplemontary diganols bisect each other All sides are congrurent Diagnaols aare congrurent diagnols bisect opposite angles

10 sides

decagon

12 sides

dodecagon

11 sides

hendecagon

7 sides

heptagon

6 sides

hexagon

9 sides

nonagon

interior angle therom

number of sides -2 * 180

8 sides

octagon

Parallelograms

opp sides paraell opp sides congruent consecutiive angles are supplemontary diganols bisect each other

Rectangles

opp sides paraell opp sides congruent consecutiive angles are supplemontary diganols bisect each other All right angles Diagnoals are congrurent

Circle permiter and area

2 * pie * radius , pie to radius the second

Trapezoids

NOn isocles trpazoids- only one pair of opposite sides are parall consecutive non base angles are supplemntatry Isosceles Trapzoids- only ONE pair of opposite sides are parallel Diagnaols are congrurent non parallel sides are congrurent opposite angles are supplementary base angles are congrurent midsegment is teh average of teh 2 bases

regular polygon

a convex polygon that is both equilangule and equilaterial

Permeiter

add all up

exterior

add up to 360

Equilangular polygon

all angles are congruent

Equilateral polygon

all the sides are congrurent

squares

opp sides paraell opp sides congruent consecutiive angles are supplemontary diganols bisect each other all right angles all sides are congrurent diagnols are perpendicular diagnoals are congrurent diagnoals bisect opposite angles

5 sides

pentagon

4 sides

quadrilateral

3 sides

triangle