Terminology for maths

Monomial - Polynomial having one term. 

Binomial - Polynomial having two terms. 

Trinomial - Polynomial having three terms. 

Zero Polynomial - Polynomial having all its coefficient zero. 

Constant Polynomial - A polynomial having only a single term ( of real number). 

Acute angle - An angle whose measure is less than 90° is called a acute angle. 

Adjacent angles - Two angles are called adjacent angles if :- 

i) they have the same vertex. 

ii) they have a common arm, and 

iii) Uncommon arms and an either side of the common arm. 

Arithmatic Mean - The arithmatic mean of a set of Observations is equal to their sum divided by the total number of ovservations. 

Axioms - The basic facts which are taken for granted, without proof are called axioms. 

Bi- Quadratic polynomial - A fourth degree polynomial is called a bi-quadratic polynomial. 

Chord- A line segment joining any two points on a circle is called a chord of the circle.

Circle- A circle is a collection of those points in a plane that are at a given constant distance from a given fixed point in the plane.

Collinear points - Three or more points are said to be collinear if there is a line which contains all of them. 

Complementary angle- Two angles, the sum of whose measures is 90°, are called complementary angle. 

Concentric circles -Circles having the same centre but with different radii are said to be concentric circles.

Concurrent line- Three or more lines are said to be concurrent if there is a point which lies on all of them. 

Consecutive angles- The consecutive angles of a quadrilateral are two angles which include a side in their intersection. In other words two angles are consecutive, if they have a common arm. 

Corresponding angle - Two angles on the same side of a transversal are known as the corresponding angles if both lie either above the two lines or below the two lines. 

Cube - A cuboid whose length, breadth and height are all equal is called a cube. 

Cuboid -A cuboid is a solid bounded by six rectangular plane regions.

Cyclic Quadrilateral-  A quadrilateral is called a cyclic quadrilateral if its all vertices lie on a circle.

Degree of a polynomial -  The exponent of the highest degree in a polynomial is known as its degree. 

Diameter - A chord passing through the centre of a circle is known as its diameter. 

Edges - Any two adjacent faces of a cuboids meet in a line segment which is called an edge of the cuboids. 

Equilateral triangle - A triangle, all of whose sides are equal is called an equilateral triangle. 

Hemisphere- A plane through the centre of a sphere divides the sphere into two equal parts, each of which is called a a hemisphere. 

Heron's formula -If a, b, c denotes the lengths of the sides of a triangle ABC. Then

Area of ∆ABC = √s(s-a)(s-b)(s-c) 

Hollow cylinder - A solid bounded by two coaxial cylinders of the same height and different radii is called a hollow cylinder. 

Identity -An identity is an equality which is true for all values of the variables. 

Intersecting lines - Two lines are intersecting if they have a common point the common point is called the point of intersection. 

Irratational numbers -A number is is an irritational number if it has a a non terminating and non repeating decimal representation. 

Isosceles Trapezium -A trapezium is said to isosceles Trapezium, if it's non- parallel sides are equal. 

Isosceles Triangle - A triangles , two of whose sides are equal in length is called an isoscales triangle. 

Kite - A quadrilateral is a kite if it has two pairs of equal adjacent sides and unequal opposite sides. 

Lateral surface - The curved surface joining the two bases of a right circular cylinder is called its lateral surface. 

Mode - Mode is the value which occurs most frequently in a set of of observations and around which the the other items of the set cluster densely. 

Obtuse angle - An angle whose measure is more than 90° but less than 180° is called an obtuse angle. 

Opposite angles- Two angles of a quadrilateral are said to be opposite angles if they do not have a common arm. 

Opposite sides - Two sides of a quadrilateral are opposite sides, if they have no common end point. 

Parallel lines- Two lines land m in a plane are  said to be parallel lines if they do not have a common point, i.e.,they do not intersect. 

Parallelogram- A quadrilateral is a parallelogram if it's both pairs of opposite sides is parallel. 

Point- A point is representing by a fine dot made by a sharp pencil on a sheet of paper. 

Radius - The radius of the circular base is called the radius of the cylinder. 

Rectangle - A parallelogram whose is angle is right angle, is called a rectangle. 

Reflex angle - An angle whose measure is more than 180° is called a reflex angle. 

Rhombus - A parallelogram having all sides equal is called a rhombus. 

Right angle - An angle whose measure is 90° is called an acute angle. 

Scalene Triangle - A triangle, whose two sides are equal is called a scalene triangle. 

Semi circles - A diameter of a circle divides it into two equal parts which are arcs. Each of these two arcs is called a semi circle. 

Sphere - The set of all points in space which are equidistant from a fixed point is called a sphere. 

Square - A square is a rectangle with a pair of adjacent sides equal. 

Straight Angle - An angle whose measure is 180° is called a straight angle. 

Supplementary Angle - Two angles, the sum of whose measures is 180° are called supplementary angles. 

Transversal - A line which intersects two or more given lines at distinct points is called a transversal of the given lines. 

Trapezium - A quadrilateral having exactly one pair of parallel sides is called a trapezium. 

Triangle - A plane figure bounded by three lines in a plane is called a triangle. 

                

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