# NCTB Class 6 Math Chapter Seven Exercise 7 Solution

NCTB Class 6 Math Chapter Seven Exercise 7 Solution by Math Expert. Bangladesh Board Class 6 Math Solution Chapter 7 “Practical Geometry” Exercise 7 Solution.

 Board NCTB Class 6 Subject Mathematics Chapter 7 Chapter Name ”Practical Geometry” Exercise 7 Solution

### Exercise:- 7

(1) What is the measure of the supplementary angle of 280?

Solution:-

The measure of the supplementary angle of 280 = (90-28)0

(a) = 620

(2) What is the measure of the vertically opposite angle of 370?

Solution:-

Vertically opposite angle of 370

(180-37)0

= 1430 (d)

(3) What is the sum of two angles complementary to each other?

Solution:-

Sum of two complementary to each other (c) 900.

(4) If one of the three angles of a triangle is 450, what will be another greater angle?

Solution:-

If one of the three angles of a triangle is 450, what will be the another greater angle – (c) 900

(5) In case of construction

Solution:-

Correct – (i), (ii), (iii)

(10) Use a ruler to draw a line segment of a length of 8 cm. Use the ruler and the compass to make a copy of this line segment.

(11) Draw a line segment of a length of 6 cm. Use the ruler and the compass to bisect this line segment. Measure the length of the segments and verify whether they are equal or not?

(12) Use a ruler to draw a line segment of a length 8 cm. Use the ruler and the compass to divide the line segment into four equal parts

(13) Using a ruler and a compass draw a perpendicular bisector of a line segment of a length of 7 cm.

(14) Draw perpendicular bisector of a line segment of a length of 8 cm.

(15) Draw perpendicular CD at a point C on a line AB. Again, take any other point E on CD and draw a perpendicular at E.

(16) Draw the angle 450 without using a protractor.

(17) Draw the bisectors of the three angles of the triangle ABC and identify their common point of intersections.