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Indian Numeral System / Indian system of numeration       Indian Numeral System in detail. Ones, Tens, Hundreds, Thousands, Ten Thousand, Lakhs, Ten Lakhs, Crores, and so on are the place values of digits.   In the number  20,63,15,768: The place value of each digit will be 8: Ones 6: Tens 7: Hundreds 5: Thousands 1: Ten Thousand 3: Lakhs 6: Ten Lakhs 0: Crores 2: Ten Crores   Following is the relationship between them: 10 Tens = 1 Hundred 100 Tens = 10 Hundreds = 1 Thousand 1000 Hundreds = 100 Thousands = 1 Lakh 10,000 Thousands = 100 Lakhs = 1 Crore Zeros in 1 Crore We know that 1 Crore = 100 Lakhs And  1 Lakh = 1,00,000 Since there are five zeros in lakhs, we can write 1 Crore as: 1 Crore = 100 x 1,00,000 1 Crore = 1,00,00,000 Therefore, the number of zeros in 1 Crore is seven.   International Numeral System / International system of numeration In the international numeral system, digit place values get assigned to Ones, Tens, Hundreds, T...

Mathematical types of angles : Each angle has a unique measure and is formed when two rays or lines intersect at a place. Acute, obtuse, right, reflex, and straight angles can all be used to describe these angles of various measurements. Angle pairs come in a variety of shapes and sizes. Let's take a closer look at the various points of view. Acute Angle Less than 90 degree angles are referred to as acute angles. A smaller than 90° angle is created when two rays cross at a vertex or a point, creating an acute angle. A few instances of sharp angles are 20, 30, 45, and 60 degrees. PQR is an acute angle, as can be seen by looking at the diagram. Right Angle When the angle created by two rays is exactly 90 degrees, a right angle is created. It is also known as a 90-degree angle due to its unique definition. Angle AOB is referred to as a right angle since it has a 90 degree angle. A square between the two rays is always used to indicate a correct angle. Obtuse Angle Greater than 90 degr...