A quadrilateral is a closed figure with four straight sides. Each point where two sides touch is called a vertex. Simple quadrilaterals are either convex or concave. Properties Four sides (edges) Four vertices (corners) The interior angles add up to 360 degrees Types of Quadrilaterals There are .....

### Mathematic

### Triangle: Definition with Types

A triangle has three sides and three angles. The three angles always add to 180° Every triangle has three sides and three angles, several of which may be similar. The sides of a triangle are given particular names in the case of a right triangle, with the side opposite the right angle being term.....

### Polygons: Definition and Types

Polygons: Definition and Types Polygons are plane figures with at least three straight sides and angles, and typically five or more. Triangles, quadrilaterals, pentagons, and hexagons are all examples of polygons. For example, a triangle has three sides, and a quadrilateral has four sides. So, an.....

### Complementary Angles and Supplementary Angles

### Complementary, Supplementary and Vertical Angles

Complementary angles: Complementary angles are two angles that have a sum of 90°. Two angles whose measures add to 90 degrees. Angle 1 and angle 2 are complementary angles because together they form a right angle. A common case is when they form a right angle. Note that angle 1 and angle 2 do no.....

### Types of Angles

Acute angle: An angle whose measure is less than 90 degrees. An angle whose measure is between 0° and 90°. The following is an acute angle. Right angle: Right angles are one of the most common and interesting angles in all of geometry. It is an angle whose measure is 90 degrees. It is an [&hell.....

### Parallel Lines and Intersecting Lines: Definition in Geometry

Parallel lines: When two lines not at all meet in space or on a plane no substance how long we extend them, we say that they are parallel lines. There are two lines that are constantly the same distance apart and never touch. In order for two lines to be parallel, they must be drawn […]Read More »

### What are Trapezoids?

In this lecture broadly explain on What are Trapezoids. It is a tutorial study based presentation. Trapezoids are quadrilateral with exactly one pair of parallel sides. The inclusive definition sets up a relationship between parallelograms and trapezoids that is exactly analogous to to the rela.....

### What are Kites?

Kite is a quadrilateral that has two pairs of consecutive congruent sides, but opposite sides are not congruent. Kites were first developed in ancient China. This lecture briefly describe on properties of kites: the diagonals of a kite are perpendicular, non-vertex angles (a)are congruent, vert.....

### Properties of Trapezoids and Kites

Main purpose of this lecture is to present on Properties of Trapezoids and Kites. Trapezoid is Quadrilateral with exactly one pair of parallel sides. A Trapezoid has two pairs of base angles. The first pair are the angles that are adjacent to the bottom base. The second pair are the angles adja.....

### An Introduction to Kites

### Kites in Geometry

Major purpose of this lecture is to present on Kites in Geometry. This lecture is tutorial study based presentation. A kite is traditionally defined as a four-sided, flat shape with two pairs of adjacent sides that are equal to each other. In geometry, a kite is a quadrilateral whose four sides.....