Each interior angle in the second polygon = 180° - 18° = 162.
2. How many diagonals does each of the following have?
360°
Each exterior angle in the second polygon
= 18°
20
..
Exercise 13.1
1. Some figures are given below.
(1) (ii) (iii) (iv)
(vi)
Classify each of them on the basis of the following:
(a) Simple curve
(b) Simple closed curve
(d) Convex polygon
(e) Concave polygon
O
X
8
(v)
(c) Polygon
(b) A regular he
(a) A convex quadrilateral
3. Find the sum of measures of all interior angles of a polygon w
) 12
Sumber of sides of a regular polygon whose each one
(i) 8
Answers
Answer:
Questioner has mentioned that a polygon has interior angles of
162
o
. It is assumed from this that all interior angles are
162
o
.
As interior angles are
162
o
, each exterior angle is
180
o
−
162
o
=
18
o
.
Sum of all the exterior angles of a polygon is always
360
o
and as each exterior angle is
18
o
,
Number of angles / sides of polygon are
360
o
18
o
=
20
Place a thanks if helps mate
Answer:
2. would have 90° for each side which will add up to 360°
To do this last question we need to make sure that this the answer makes 360° so since we have 18 for the first angle it would have to be the same for the third angle because it is a polygon so 18+18=36 now let take away 36 for 360 or 360-36=324 so what ever is the 2nd angle is the 4th angle is so
the answer would be 162