Revision: Math Magic >> The Fish Tale Mathematics Secondary School (English Medium) (5 to 8) Class 5 CBSE

A plane figure bounded by three lines in a plane is called a triangle. The figure below represents a ΔABC, with AB, AC andBC as the three line segments.

A triangle (denoted by the symbol △) is the simplest closed shape in geometry. It is a two-dimensional figure made by connecting three points that do not lie on the same straight line (non-collinear).

• Cost Price (C.P.): The amount for which an article is bought is called its Cost Price (C.P.).
• Selling Price (S.P.): The price at which a product is sold is known as its selling price (S.P.).
• Profit or Gain: When the S.P. is more than the C.P., then there is a profit or gain.
• Loss: When the S.P. is less than the C.P., then there is a loss.
• Discount: A Discount is the reduction given on the marked price of an article by the seller, usually to attract customers.
• Marked Price (M.P.): Marked Price (also called Tag Price) is the price printed or written on an article by the shopkeeper, which is usually higher than the cost price

Speed = `"Distance" / "Time"` 

Distance = Speed × Time 

Time = `"Distance" / "Speed"`

• Profit = Selling Price - Cost Price, which means CP < SP.
• Loss = Cost Price - Selling Price, which means CP > SP.
• Selling Price = Marked Price – Discount
• Discount% = `"Discount"/"Marked Price"` × 100%