EASY

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IMPORTANT

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How many diagonals does the following figure have?

A regular hexagon.

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Important Questions on Understanding Quadrilaterals

EASY

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IMPORTANT

MATHEMATICS Textbook for Class VIII>Chapter 3 - Understanding Quadrilaterals>EXERCISE>Q 2

How many diagonals does a triangle have?

MEDIUM

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IMPORTANT

MATHEMATICS Textbook for Class VIII>Chapter 3 - Understanding Quadrilaterals>EXERCISE>Q 3

What is the sum of the measures of the angles of a convex quadrilateral? Will this property hold if the quadrilateral is not convex? (Make a non-convex quadrilateral and try!)

EASY

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IMPORTANT

MATHEMATICS Textbook for Class VIII>Chapter 3 - Understanding Quadrilaterals>EXERCISE>Q 4

Examine the table. (Each figure is divided into triangles and the sum of the angles deduced from that.)

Figure
Side	$3$	$4$	$5$	$6$
Angle	$180 °$	$2 \times 180 °$ $= (4 - 2) \times 180 °$	$3 \times 180 °$ $= (5 - 2) \times 180 °$	$4 \times 180 °$ $= (6 - 2) \times 180 °$

If the angle sum of a convex polygon with number of sides equal to

7

k °

, then find the value of

k

EASY

8th Goa Board

IMPORTANT

MATHEMATICS Textbook for Class VIII>Chapter 3 - Understanding Quadrilaterals>EXERCISE>Q 4

Examine the table. (Each figure is divided into triangles and the sum of the angles deduced from that.)

Figure
Side	$3$	$4$	$5$	$6$
Angle	$180 °$	$2 \times 180 °$ $= (4 - 2) \times 180 °$	$3 \times 180 °$ $= (5 - 2) \times 180 °$	$4 \times 180 °$ $= (6 - 2) \times 180 °$

If the angle sum of a convex polygon with number of sides equal to $8$ is $k °$ , then find the value of $k$ .

EASY

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IMPORTANT

MATHEMATICS Textbook for Class VIII>Chapter 3 - Understanding Quadrilaterals>EXERCISE>Q 4

Examine the table. (Each figure is divided into triangles and the sum of the angles deduced from that.)

Figure
Side	$3$	$4$	$5$	$6$
Angle	$180 °$	$2 \times 180 °$ $= (4 - 2) \times 180 °$	$3 \times 180 °$ $= (5 - 2) \times 180 °$	$4 \times 180 °$ $= (6 - 2) \times 180 °$

If the angle sum of a convex polygon with number of sides equal to $10$ is $k °$ , then find the value of $k$ .

EASY

8th Goa Board

IMPORTANT

MATHEMATICS Textbook for Class VIII>Chapter 3 - Understanding Quadrilaterals>EXERCISE>Q 4

Examine the table. Examine the table. (Each figure is divided into triangles and the sum of the angles deduced from that.)

Figure
Side	$3$	$4$	$5$	$6$
Angle	$180 °$	$2 \times 180 °$ $= (4 - 2) \times 180 °$	$3 \times 180 °$ $= (5 - 2) \times 180 °$	$4 \times 180 °$ $= (6 - 2) \times 180 °$