Chapter 6 : Triangles
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The Basic Proportionality Theorem is also known as
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The side opposite to the right angle in a right triangle is
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If a² + b² < c², then the triangle is
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Which theorem is used in proving similarity through proportional sides?
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If ΔABC ~ ΔPQR, then ∠B =
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The ratio of areas of two similar triangles is 49:64. Ratio of corresponding sides is
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If sides of a triangle are 7 cm, 24 cm, and 25 cm, then the triangle is
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In a triangle, the line joining midpoints of two sides is
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Which pair of triangles is always similar?
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If the ratio of corresponding sides of two similar triangles is k, then the ratio of their areas is
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If ΔABC ~ ΔDEF and ∠A = 50°, then ∠D =
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The theorem stating “equal angles stand on equal sides” is related to
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In a right triangle, if one leg is 5 cm and hypotenuse is 13 cm, the other leg is
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A line drawn parallel to one side of a triangle forms
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The ratio of perimeters of similar triangles is 2:3. The ratio of areas is
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Which of the following triangles are always similar?
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If two triangles are similar, then their corresponding sides are
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In ΔABC, if AB² + BC² = AC², then ∠B is
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Which theorem is useful in construction of tangents and heights?
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The area of two similar triangles are in the ratio 16:25. The ratio of their corresponding sides is
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If the corresponding sides of two triangles are equal, then the triangles are
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The converse of BPT helps to prove that a line is
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If DE ∥ BC in ΔABC, then according to BPT, AD/AB =
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A triangle whose sides satisfy a² + b² > c² is
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The ratio of corresponding altitudes of similar triangles is equal to the ratio of their
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In similar triangles, corresponding medians are
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If a perpendicular is drawn from the vertex of a right triangle to the hypotenuse, then the triangles formed are
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Which of the following is NOT a similarity criterion?
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The sides of a triangle are 6 cm, 8 cm, and 10 cm. The triangle is
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If ΔABC ~ ΔDEF and AB = 4 cm, DE = 6 cm, EF = 9 cm, then BC =
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If one angle of a triangle is 90°, then the triangle is
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Which condition is sufficient for similarity of triangles?
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If the ratio of corresponding sides of two similar triangles is 3:5, then the ratio of their areas is
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The theorem used to find the unknown side in a right triangle is
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If two triangles have all corresponding angles equal, they are
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The longest side of a right triangle is called
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In ΔABC, if DE ∥ BC, then AD/DB =
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A triangle with sides 3 cm, 4 cm, and 5 cm is
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If two triangles are similar, their perimeters are in the ratio of their
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The ratio of areas of two similar triangles is equal to the square of the ratio of their
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If ΔABC ~ ΔPQR and AB = 6 cm, PQ = 9 cm, then similarity ratio is
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If a line divides any two sides of a triangle in the same ratio, then the line is
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The converse of Pythagoras theorem is used to check whether a triangle is
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In a right triangle, the square of the hypotenuse is equal to
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Which theorem states that a line parallel to one side of a triangle divides the other two sides proportionally?
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If the sides of two triangles are proportional, then the triangles are
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If ΔABC ~ ΔDEF, then AB/DE = BC/EF =
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In similar triangles, corresponding angles are
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The criterion used for proving similarity of triangles when two angles are equal is
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If two triangles are congruent, then their corresponding sides are
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