EASY
8th Goa Board
IMPORTANT
Earn 100

Classify the given figure on the basis of the following:
(i) Simple curve
(ii) Simple closed curve
(iii) polygon
(iv) Convex polygon
(v) Concave polygon

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Important Questions on Understanding Quadrilaterals

EASY
8th Goa Board
IMPORTANT

Classify the given figure on the basis of the following:
(i) Simple curve
(ii) Simple closed curve
(iii) polygon
(iv) Convex polygon
(v) Concave polygon

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EASY
8th Goa Board
IMPORTANT

Classify the given figure on the basis of the following:
(i) Simple curve
(ii) Simple closed curve
(iii) polygon
(iv) Convex polygon
(v) Concave polygon

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EASY
8th Goa Board
IMPORTANT

Classify the given figure on the basis of the following:
(i) Simple curve
(ii) Simple closed curve
(iii) polygon
(iv) Convex polygon
(v) Concave polygon

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EASY
8th Goa Board
IMPORTANT

How many diagonals does a Convex quadrilateral have?

EASY
8th Goa Board
IMPORTANT

How many diagonals does the following figure have?

A regular hexagon.

EASY
8th Goa Board
IMPORTANT

How many diagonals does a triangle have?

MEDIUM
8th Goa Board
IMPORTANT
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
8th Goa Board
IMPORTANT
Examine the table. (Each figure is divided into triangles and the sum of the angles deduced from that.)
Figure
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Side 3 4 5 6
Angle
180°

2×180°
=(4-2)×180°

3×180°
=(5-2)×180°

4×180°
=(6-2)×180°

If the angle sum of a convex polygon with number of sides equal to 7 is k°, then find the value of k.