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**2.**Mathematician who proved that in a right triangle, the square of the hypotenuse is equal to the sum of the square of the other two sides.**5.**The ________ relation relates mean, median and mode of data.o**7.**Type of solutions of pair of linear equations represented by two intersecting lines.**11.**Method of solving a pair of linear equation in which one variable is eliminated by making its cofficients equal in the two equations.**12.**Two figures with same shape and size.**16.**A pair of lines representing a pair of linear equations in two variables having no solution.**17.**The ratio of the areas of two similar triangles is equal to the ratio of the ________ of their corresponding sides.**18.**The numbers that have either terminating or non-terminatig repeating decimal expansion.

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**1.**The numbers that include rational and irrational number.**3.**Branch of Mathematician in which we study the relationship between the sides and angles of a triangle.**4.**Cosine of 90 degree.**6.**Triangles whose corresponding angles are equal.**8.**Sine of (90 degree - 0)**9.**Graphical representation of alinear equation in teo variable.**10.**The degree of variables in a linear equation.**13.**Mathematician with whose name Basic Proportionality Theorem is known.**14.**________ division algorithm is used to find the HCF of two positive numbers.**15.**The number that has exactly two factors, one and the number itself.**16.**For any two numbers, HCF X LCM = ________ of numbers.