#
OEF vectors 2D
--- Introduction ---

This module contains actually 11 exercises on vectors in 2D
(linear combinations, angle, length, scalar product, vector product, etc.).

### Area of parallelogram

(,) , (,) , (,) , (,).

### Area of pentagon

= (,),
= (),
= (),
= (),
= ().

### Area of quadrilateral

xrange -15,15 yrange -15,15 arrow -15,0,15,0,10,grey arrow 0,-15,0,15,10,grey linewidth 2 polygon red,,,,,,,, linewidth 4 points blue,,,,,,,,

= (,),
= (),
= (,),
= ().

### Area of triangle

(,), (,), (,).

### Angle

,
,
.

### Combination

,
.

.

### Combination 3 vectors

,
,
.

.

### Find combination

,
.

:
.

### Given scalar products

,
.

:
,
.

### Vertex of parallelogram

,
,
.

.

### Linear relation

:
.

,

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- Description: collection of exercises on 2D vectors. interactive exercises, online calculators and plotters, mathematical recreation and games
- Keywords: interactive mathematics, interactive math, server side interactivity, algebra, linear_algebra, geometry, vectors, cross_product, polygons,euclidean_geometry