Two figures are said to be similar if:, a) Their areas are equal, b) Their shapes are same but sizes may differ, c) Their perimeters are equal, d) Their sizes are same but shapes may differ, In ∆ABC and ∆DEF, if ∠A = ∠D, ∠B = ∠E, then the two triangles are similar by:, a) AAA criterion, b) AA similarity criterion, c) SSS similarity criterion, d) SAS similarity criterion, The Basic Proportionality Theorem (Thales theorem) states:, a) A line parallel to one side of a triangle divides the other two sides in equal parts, b) A line parallel to one side of a triangle divides the other two sides in the same ratio, c) All sides of a triangle are in proportion, d) None of these, In ∆PQR, if a line parallel to QR intersects PQ and PR at points M and N respectively, then:, a) PM/PQ = PN/PR, b) QM/PQ = RN/PR, c) PM/PQ = PN/PR = MN/QR, d) PM/MQ = PN/NR, If in two triangles, corresponding sides are proportional, then triangles are similar by:, a) SSS similarity criterion, b) SAS similarity criterion, c) RHS similarity criterion, d) AAA similarity criterion, The Pythagoras theorem is applicable in:, a) Any triangle, b) Isosceles triangles only, c) Right-angled triangles only, d) Equilateral triangles, If ∆ABC ~ ∆PQR and AB/BC = PQ/QR = 1/2, then the ratio of their areas is:, a) 1 : 2, b) 1 : 4, c) 2 : 3, d) 2 : 1, If the sides of two similar triangles are in the ratio 3:4, then the ratio of their areas is:, a) 3:4, b) 9:16, c) 4:9, d) 16:9, In a right triangle, if one side is 5 cm, the other side is 12 cm, then the hypotenuse is:, a) 11 cm, b) 12 cm, c) 13 cm, d) 14 cm, In ∆XYZ, a line divides ∆XYZ into two parts of equal area. This line is:, a) Median, b) Altitude, c) Angle bisector, d) Perpendicular bisector

TRIANGLES CLASS X

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