PLZ SOLVE ALL QUESIONS
i will mark u as the brainliest
Answers
Answer:
1. (a) False. Since, squares have all sides are equal.
(b) True. Since, in rhombus, opposite angles are equal and diagonals intersect at mid-point.
(c) True. Since, squares have the same property of rhombus but not a rectangle.
(d) False. Since, all squares have the same property of parallelogram.
(e) False. Since, all kites do not have
equal sides.
(f) True. Since, all rhombuses have equal sides and diagonals bisect each other.
(g) True. Since, trapezium has only two parallel sides.
(h) True. Since, all squares have also two parallels
2. <p=<r=110. opposite angles of a parallelogram is equal
<s=180°-<p
<s=180°-110°=70°. adjacent angles of a parallelogram are 180°
3.One angle =5x-8
Another angle =2x+82
Opposite angle are equal in
parallelogram
So,
5x-8=2x+82
5x-2x =82+8
3x=90
x=90/3
x=30
Therefore,
1st angle =5x-8
= 5(30)-8
=142 degree 2nd angle=2x+82
=2(30)+82
=142 degree
4.Step-by-step explanation:
If j is 70 then I is also 70 becz opp angles of a parallelogram are equal
Then angle j +k+l+m=360
70+70+2x=360
2x=220
X=110
That is angle k and m are 110
5.let the interior angle be x exterior angle will be
(180- x)
(180-x) = 1x/5
900-5x = x
900= x + 5x
900= 6x
x = 900/6
x= 150
each interior angle is 150°
the number of sides are
{n-2)* 180}/n = 150 (n-2)* 180 = 150n
n-2 = 150n / 180
n-2 = 5n/6
6(n - 2)=5n
6n - 5n = 12
n = 12
number of sides= 12
6.Angle COD= 1800- 1/2angle C-1/2 angle D=1800-1/2(angle C+D)--- --(1)
Angle (A+B+C+D)=3600
AngleC+D= 3600 - AngleA- angle --(2)
Substituting (2) in (1)
Angle COD= 1800-1/2(3600- angle A Angle B)
Angle COD= 1800-1800+1/2 Angle A + 1/2 Angle B= 1/2(Angle A+ Angle B). these are the answers plz mark as brainliest plz plz mark as brainliest it took me much time to solve and check i deserve it fast you already thanked but didn't mark as brainliest that not fair.
plz mark as brainliest fast or gonna deleter the answer
Answer:
this i am not sure but pls mark me as brainliest
Step-by-step explanation:
1. (a) False. Since, squares have all sides are equal.
(b) True. Since, in rhombus, opposite angles are equal and diagonals intersect at mid-point.
(c) True. Since, squares have the same property of rhombus but not a rectangle.
(d) False. Since, all squares have the same property of parallelogram.
(e) False. Since, all kites do not have
equal sides.
(f) True. Since, all rhombuses have equal sides and diagonals bisect each other.
(g) True. Since, trapezium has only two parallel sides.
(h) True. Since, all squares have also two parallels
2. <p=<r=110. opposite angles of a parallelogram is equal
<s=180°-<p
<s=180°-110°=70°. adjacent angles of a parallelogram are 180°
3.One angle =5x-8
Another angle =2x+82
Opposite angle are equal in
parallelogram
So,
5x-8=2x+82
5x-2x =82+8
3x=90
x=90/3
x=30
Therefore,
1st angle =5x-8
= 5(30)-8
=142 degree 2nd angle=2x+82
=2(30)+82
=142 degree
4.Step-by-step explanation:
If j is 70 then I is also 70 becz opp angles of a parallelogram are equal
Then angle j +k+l+m=360
70+70+2x=360
2x=220
X=110
That is angle k and m are 110
5.let the interior angle be x exterior angle will be
(180- x)
(180-x) = 1x/5
900-5x = x
900= x + 5x
900= 6x
x = 900/6
x= 150
each interior angle is 150°
the number of sides are
{n-2)* 180}/n = 150 (n-2)* 180 = 150n
n-2 = 150n / 180
n-2 = 5n/6
6(n - 2)=5n
6n - 5n = 12
n = 12
number of sides= 12
6.Angle COD= 1800- 1/2angle C-1/2 angle D=1800-1/2(angle C+D)--- --(1)
Angle (A+B+C+D)=3600
AngleC+D= 3600 - AngleA- angle --(2)
Substituting (2) in (1)
Angle COD= 1800-1/2(3600- angle A Angle B)