BLANKS [1 Marks Each]

Question 11 Mark

If in $\triangle M N P, M N=5.5 cm , N P=5.5 cm$ and $M P=5.5 cm$, then $\triangle M N P$ is………. (a scalene triangle, an isosceles triangle, an equilateral triangle)

Answer

an equilateral triangle

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Question 21 Mark

If in $\triangle F O X, F O=4 cm , O X=5 cm$ and $F X=6 cm$, then $\triangle F O X$ is………. (an equilateral triangle, a scalene triangle, an isosceles triangle)

Answer

a scalene triangle

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Question 31 Mark

If in $\triangle D E F, D E=5 cm , E F=6 cm$ and $D F=5 cm$, then $\triangle D E F$ is………. (an isosceles triangle. an equilateral triangle, a scalene triangle)

Answer

an isosceles triangle

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Question 41 Mark

If in $\triangle XYZ , \angle X =40^{\circ}, \angle Y =50^{\circ}$ and $\angle Z =90^{\circ}$, then $\triangle XYZ$ is………. (an acute angled triangle, a right angled triangle, an obtuse angled triangle)

Answer

a right angled triangle

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Question 51 Mark

If in $\triangle PQR , \angle P =20^{\circ}, \angle Q =50^{\circ}$ and $\angle R =110^{\circ}$, then $\triangle PQR$ is……….(an acute angled triangle. a right angled triangle, an obtuse angled triangle)

Answer

an obtuse angled triangle

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Question 61 Mark

If in $\triangle ABC , \angle A =60^{\circ}, \angle B =50^{\circ}$ and $\angle C =70^{\circ}$, then $\triangle ABC$ is………. (a right angled triangle. an obtuse angled triangle, an acute angled triangle)

Answer

an acute angled triangle

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Question 71 Mark

If the three sides of a triangle are of different length. it is called……….. (an isosceles triangle, an equilateral triangle, a scalene triangle)

Answer

a scalene triangle

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Question 81 Mark

If two sides of a triangle are equal, it is called:………. (an isosceles triangle. an equilateral triangle. a scalene triangle)

Answer

an isosceles triangle

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Question 91 Mark

If all the three sides of a triangle are equal, it is called………. (an isosceles triangle, an equilateral triangle. a scalene triangle)

Answer

an equilateral triangle

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Question 101 Mark

An angle whose measure is more than $180$ and less than $360$ is called………. (a reflex angle. a complete angle, a straight angle)

Answer

a reflex angle

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Question 111 Mark

An angle of measure is $180$ deg is called………. (a reflex angle. a complete angle. a straight angle)

Answer

a straight angle

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Question 121 Mark

An angle whose measure is $90$ is called………. (an acute angle, a right angle, an obtuse angle)

Answer

a right angle

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Question 131 Mark

An angle whose measure is more than $90$ deg and less than $180$ is called. (an acute angle, an obtuse angle, a right angle)

Answer

an obtuse angle

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Question 141 Mark

An angle whose measure is less than $90$ deg is called……… (an acute angle, an obtuse angle, a right angle)

Answer

an acute angle

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MATHS BLANKS [1 Marks Each]

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