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Write the following statement in conditional form.
A number having only two divisors is called a prime number.
Concept: undefined >> undefined
Write the converse of the following statement.
If the sum of measures of angles in a figure is 180°, then the figure is a triangle.
Concept: undefined >> undefined
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Write the converse of the following statement.
If the sum of measures of two angles is 90° then they are complement of each other.
Concept: undefined >> undefined
Write the converse of the following statement.
If the corresponding angles formed by a transversal of two lines are congruent then the two lines are parallel.
Concept: undefined >> undefined
Write the converse of the following statement.
If the sum of the digits of a number is divisible by 3 then the number is divisible by 3.
Concept: undefined >> undefined
Diagonals of a parallelogram `square`WXYZ intersect each other at point O. If ∠XYZ = 135° then what is the measure of ∠XWZ and ∠YZW?
If l(OY)= 5 cm then l(WY)= ?
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In the given figure, y = 108° and x = 71° Are the lines m and n parallel? Justify.

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In the figure, ray AE || ray BD, ray AF is the bisector of ∠EAB and ray BC is the bisector of ∠ABD. Prove that line AF || line BC.

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A transversal EF of line AB and line CD intersects the lines at point P and Q respectively. Ray PR and ray QS are parallel and bisectors ∠BPQ and ∠PQC respectively. Prove that line AB || line CD.

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In the given figure, measures of some angles are shown. Using the measures find the measures of ∠x and ∠y and hence show that line l || line m.

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In the given figure, if line AB || line CF and line BC || line ED then prove that ∠ABC = ∠FDE.

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In the given figure, line PS is a transversal of parallel line AB and line CD. If Ray QX, ray QY, ray RX, ray RY are angle bisectors, then prove that `square` QXRY is a rectangle.

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Perpendicular height of a cone is 12 cm and its slant height is 13 cm. Find the radius of the base of the cone.
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Write the antecedent (given part) and the consequent (part to be proved) in the following statement.
If all sides of a triangle are congruent then its all angles are congruent.
Concept: undefined >> undefined
Write the antecedent (given part) and the consequent (part to be proved) in the following statement.
The diagonals of a parallelogram bisect each other.
Concept: undefined >> undefined
Draw a labelled figure showing information in the following statement and write the antecedent and the consequent.
Two equilateral triangles are similar.
Concept: undefined >> undefined
Draw a labelled figure showing information in the following statement and write the antecedent and the consequent.
If angles in a linear pair are congruent then each of them is a right angle.
Concept: undefined >> undefined
Draw a labelled figure showing information in the following statement and write the antecedent and the consequent.
If the altitudes drawn on two sides of a triangle are congruent then those two sides are congruent.
Concept: undefined >> undefined
The length of hypotenuse of a right angled triangle is 15. Find the length of median of its hypotenuse.
Concept: undefined >> undefined
In ΔPQR, ∠Q = 90°, PQ = 12, QR = 5 and QS is a median. Find l(QS).
Concept: undefined >> undefined
