Question Bank by Edumentors
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What's a right angle?
A right angle is an angle that measures exactly 90 degrees. It is one of the basic types of angles in geometry and represents a quarter turn or a perpendicular intersection of two lines. Right angles are often denoted by a small square placed in the angle's corner. They are a fundamental aspect of many geometric figur
What's an obtuse angle?
An obtuse angle is an angle that measures more than 90 degrees but less than 180 degrees. It's larger than a right angle (which is exactly 90 degrees) but smaller than a straight angle (which is exactly 180 degrees). Obtuse angles are common in various geometric shapes and designs.
What is an acute angle?
An acute angle is an angle that measures less than 90 degrees. It is one of the basic types of angles in geometry and is smaller than a right angle, which measures exactly 90 degrees. Acute angles are commonly seen in various geometric shapes and figures.
What is the cosine rule?
The Cosine Rule, also known as the Law of Cosines, is a trigonometry rule that relates the lengths of a triangle's sides to the cosine of one of its angles. It's useful for solving triangles that are not right-angled. The rule is expressed as follows: In a triangle with sides of lengths a, b, and c, and with the angl
What is the Fundamental Theorem of Arithmetic?
The Fundamental Theorem of Arithmetic states that every integer greater than 1 is either a prime number itself or can be factorised uniquely into prime numbers, apart from the order of the factors. For example, 20 can be factorised into 225 (or 2^2*5) and no other combination of prime numbers will give you 20. This th
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