### You get a problem that tells you something about a rhombus. It mentions the diagonals. How should you approach the solution? What are the properties that apply to this problem?

### Many students report getting confused with all the properties for quadrilaterals. This lesson strives to easy that pain; by giving you the opportunity to view each one in the beginning, and all of them in context at the end. You won't be worried anymore about getting a problem that involves properties for a quadrilateral! Colors and animations guide you throughout the lesson! One very useful feature throughout the lesson is that you are given the opportunity to solve very similar problems on the screen with the marker tools menu and your stylus.

** Lesson's Content **

** Lesson's Glossary **

**Angle **

Geometry shape formed by two rays (initial and ending sides of the angle) that share a common endpoint called the vertex. You may name an angle using the vertex, or a point in each ray and the vertex label in the center.

**Isosceles trapezoid **

Trapezoid with two non-congruent and non-parallel sides.

**Kite **

Parallelogram with two pairs of adjacent sides congruent and without opposite sides congruent.

**Parallelogram **

Any quadrilateral with two pairs of opposite sides parallel.

**Polygon **

It is a closed plane figure with a least three straight segments as sides.

**Quadrilateral **

A four-sided polygon.

**Rectangle **

Any parallelogram that has 4 right angles.

**Rhombus **

Any parallelogram with 4 congruent sides.

**Square **

Parallelogram with four congruent sides and four congruent angles.

**Trapezoid **

Quadrilateral with exactly one pair of parallel sides.

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