NCERT Exemplar Mathematics - Class 8>Chapter 5 - Understanding Quadrilaterals and Practical Geometry>Exercise>Q 132

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The diagonals of a rhombus are $8 cm$ and $15 cm .$ Find its side in $cm$ in decimal.

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Important Questions on Understanding Quadrilaterals and Practical Geometry

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NCERT Exemplar Mathematics - Class 8>Chapter 5 - Understanding Quadrilaterals and Practical Geometry>Exercise>Q 133

Two adjacent angles of a parallelogram are in the ratio

1 : 3

. Find its angles.

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NCERT Exemplar Mathematics - Class 8>Chapter 5 - Understanding Quadrilaterals and Practical Geometry>Exercise>Q 134

Of the four quadrilaterals- square, rectangle, rhombus and trapezium - one is somewhat different from the others because of its design. Find it and give justification

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NCERT Exemplar Mathematics - Class 8>Chapter 5 - Understanding Quadrilaterals and Practical Geometry>Exercise>Q 135

In a rectangle

ABCD

,

AB = 25 cm

and

BC = 15 .

If the ratio, in which the bisector of

∠ C

divide

AB

is

2 : k

, find

k

.

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NCERT Exemplar Mathematics - Class 8>Chapter 5 - Understanding Quadrilaterals and Practical Geometry>Exercise>Q 136

$P Q R S$ is a rectangle. The perpendicular $S T$ from $S$ on $P R$ divides $∠ S$ in the ratio $2 : 3$ . If $∠ P S T = k °$ , find $k$ .

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NCERT Exemplar Mathematics - Class 8>Chapter 5 - Understanding Quadrilaterals and Practical Geometry>Exercise>Q 137

A photo frame is in the shape of a quadrilateral with one diagonal longer than the other. Is it a rectangle? Why or why not?

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NCERT Exemplar Mathematics - Class 8>Chapter 5 - Understanding Quadrilaterals and Practical Geometry>Exercise>Q 138

The adjacent angles of a parallelogram are

(2 x - 4)^{o}

and

(3 x - 1)^{o} .

Find the measures of all angles of the parallelogram.

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IMPORTANT

NCERT Exemplar Mathematics - Class 8>Chapter 5 - Understanding Quadrilaterals and Practical Geometry>Exercise>Q 139

The point of intersection of diagonals of a quadrilateral divides one diagonal in the ratio

1 : 2 .

Can it be a parallelogram? Why or why not?

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IMPORTANT

NCERT Exemplar Mathematics - Class 8>Chapter 5 - Understanding Quadrilaterals and Practical Geometry>Exercise>Q 140

The ratio between exterior angle and interior angle of a regular polygon is

1 : 5 .

Find the number of sides of the polygon.