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Rules of congruence for triangles Class 7 Maths Five main rules of congruency for triangles are as follows: Side-Side-Side (or SSS): SSS rule states that two triangles are congruent if all three sides of one triangle are comparable to the corresponding three sides of the second triangle. Side-Angle-Side (or SAS) - rule states that two triangles are congruent if any two sides and angles included between the sides of one triangle are equivalent to the corresponding two sides and angles contained between the sides of the second triangle. Angle-Side-Angle (or ASA) - rule states that two triangles are congruent if any two angles and sides included between the angles of one triangle are comparable to the corresponding two angles and sides included between the angles of the second triangle. Angle-Angle-Side (or AAS) : Congruent triangles have two equal angles and a non-included side, according to this rule. AAS is analogous to ASA in that two angles and one side from two separate triangles

Equivalent Fraction Class 7 Maths When fractions are reduced to their simplest forms, equivalent fractions have the same value in their numerators and denominators . Example to convert a fraction into its simplest form To reduce a fraction to its most basic form, divide both the numerator and the denominator by a common number. Repeat the process until no single number can divide both the numerator and the denominator. Consider the fraction 2/4 as an example. Both the numerator and denominator can be divided by two, as we can see. As a result, we divide 2 and 4 by 2 and substitute the quotients of each division for the numerator and denominator. Because 2 divided by 2 yields a quotient of 1, 2 is replaced with 1. Similarly, the number 4 is replaced with the number 2 since 4 divided by 2 yields a quotient of 2. As a result, the most basic version of 2/4 is 1/2. Fraction Exercise for practice I. Fill in the blank to make the fractions equivalent: 24/__ = 4/1 220/__ = 20/11 20/40 = ___/2