KEC International Maths Teacher Interview Questions and Answers

Congruency and similarity are geometric concepts that involve the comparison of shapes.

• Congruency refers to two shapes that have the same shape and size.

• Similarity refers to two shapes that have the same shape but may differ in size.

• Congruent shapes can be superimposed on each other, while similar shapes can be scaled or transformed to match each other.

• Congruency is an exact match, while similarity allows for proportional differences.

• For example, two congruent triangles have ...read more

Yes, 0 is a rational number because it can be expressed as a fraction where the numerator is 0 and the denominator is any non-zero integer.

• A rational number is any number that can be expressed as a fraction.

• The fraction representing 0 is 0/1 or 0/2 or 0/3, and so on.

• The denominator can be any non-zero integer.

• Examples of rational numbers include 1/2, 3/4, -5/7, and 0/1.

22/7 is an approximation of the mathematical constant π.

• 22/7 is a commonly used approximation for π in many mathematical calculations.

• The actual value of π is an irrational number and cannot be expressed exactly as a fraction.

• The decimal representation of π goes on infinitely without repeating.

• Using 22/7 as an approximation for π is accurate enough for most practical purposes.

A rational number is a number that can be expressed as a fraction of two integers.

• Rational numbers can be positive, negative, or zero.

• They can be expressed in the form of p/q, where p and q are integers and q is not equal to zero.

• Examples of rational numbers include 1/2, -3/4, 0, 5, and -2.

π is irrational because it cannot be expressed as a fraction and its decimal representation is non-repeating and non-terminating.

• An irrational number cannot be expressed as a fraction or a ratio of two integers.

• π is a transcendental number, meaning it is not the root of any non-zero polynomial equation with integer coefficients.

• The decimal representation of π goes on forever without repeating or terminating, making it irrational.

• Proofs of the irrationality of π involve advanc...read more

Degrees and radians are units of measurement for angles.

• Degree is a unit of measurement for angles, where a full circle is divided into 360 degrees.

• Radian is another unit of measurement for angles, where a full circle is divided into 2π radians.

• Degrees are commonly used in everyday life and in most mathematical calculations.

• Radians are often used in advanced mathematics and physics.

• To convert from degrees to radians, multiply the degree measure by π/180.

• To convert from radian...read more