EASY
10th CBSE
IMPORTANT
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AA similarity criterion: If in two triangles, two angles of one triangle are respectively equal to the two angles of the other triangle, then the two triangles are .  Similar / Congruent

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Important Questions on Triangles

EASY
10th CBSE
IMPORTANT
SSS similarity criterion: If in two triangles, corresponding sides are in the _____, then their corresponding angles are equal and hence the triangles are _____.
EASY
10th CBSE
IMPORTANT
SAS similarity criterion: If one angle of a triangle is equal to one angle of another triangle and the sides including these angles are in the........., then the triangles are similar.
EASY
10th CBSE
IMPORTANT
The ratio of the _____ of two similar triangles is equal to the square of the ratio of their corresponding sides.
EASY
10th CBSE
IMPORTANT
If a perpendicular is drawn from the vertex of the right angle of a right triangle to the hypotenuse, then the triangles on both sides of the perpendicular are _____ to the whole triangle and also similar to each other.
EASY
10th CBSE
IMPORTANT
Converse of Pythagoras Theorem. If in a triangle, square of the longest side is equal to the sum of the squares of the other two sides, then the angle opposite to the longest side is equal to _____ degrees.
MEDIUM
10th CBSE
IMPORTANT
In the figure, if DEBC, then the approximate value of x is
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MEDIUM
10th CBSE
IMPORTANT
In the figure below, PQBC and AP:PB=1:2. Find ar(APQ)arABC.
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MEDIUM
10th CBSE
IMPORTANT

In the figure below, ABC~PQR, then y+z is

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