NCERT Solutions for Class 8 Maths Chapter 4 Practical Geometry Ex 4.3
NCERT Solutions for Class
8 Maths Chapter 4
Practical Geometry Ex 4.3 are the part of NCERT Solutions for Class 8 Maths.
Here you can find the NCERT Solutions for Class 8 Maths Chapter 4 Practical Geometry Ex
4.3.
Ex 4.3 Class 8 Maths Question 1.
Construct the following quadrilaterals:(i) Quadrilateral MORE
MO = 6 cm, OR = 4.5 cm, ∠M = 60°, ∠O = 105°, ∠R = 105°
(ii) Quadrilateral PLAN
PL = 4 cm, LA = 6.5 cm, ∠P = 90°, ∠A = 110°, ∠N = 85°
(iii) Parallelogram HEAR
HE = 5 cm, EA = 6 cm, ∠R = 85°
(iv) Rectangle OKAY
OK = 7 cm, KA = 5 cm
Solution:
(i) Let us draw a rough sketch first.
Step 1: Draw a line segment OR = 4.5 cm.
Step 2: Draw two angles of 105° each at O and R with the help of protractor.
Step 3: Cut the line segment OM = 6 cm.
Step 4:
Draw an angle of 60° at M to cut the ray through R at E.
Thus, MORE is the required quadrilateral.
(ii) Let us draw a rough sketch first.
Step 1:
Draw a line segment LA = 6.5 cm.
Step 2: Draw an angle of 75° at L and 110° at A
with the help of a protractor.
[∵ 360° – (110° + 90° + 85°) = 75°]
Step 3: Cut the line segment LP = 4 cm.
Step 4: Draw an angle of 90° at P which cuts the
ray through A at N.
Thus, PLAN is the required quadrilateral.
(iii) Let us draw a rough sketch first.
Steps of Construction: We know that the opposite sides of a parallelogram are equal.
Step 1:
Draw a line segment HE = 5 cm.
Step 2: Draw an angle of 85° at E and cut EA = 6
cm.
Step 3: Draw an arc with centre A and radius 5
cm.
Step 4: Draw another arc with centre H and
radius 6 cm to cut the previous arc at R.
Step 5: Join HR and AR.
Thus, HEAR is the required parallelogram.
(iv) Let us draw a rough sketch first.
Step 1:
Draw a line segment OK = 7 cm.
Step 2: Draw the angle of 90° at K and cut KA =
5 cm.
Step 3: Draw an arc with centre O and radius 5
cm.
Step 4: Draw another arc with centre A and
radius 7 cm to cut the previous arc at Y.
Step 5: Join OY and AY.
Thus, OKAY is the required rectangle.
You can also like these:
NCERT Solutions for Maths Class 9
NCERT Solutions for Maths Class 10
NCERT Solutions for Maths Class 11