Question

7 Draw a right angled triangle, in which the sides
(other than hypotenuse) are of lengths 4 cm and
3 cm. Then, construct another triangle whose
sides are times the corresponding sides of
given triangle.
. Linh RC – 4 cm and


this is construction chapter class 10th exercise 11.1​

Answer 1

Given , a right angled ∆ ABC , in which BC = 4 cm , AB= 3 cm .

Here scale factor= 5/3 >1

Steps of construction:

1. Draw a line segment BC =4 cm.

2. At B draw ∠B = 90° and cut off BA =3 cm from it.

3. Join AC. Thus ∆ABC is a given right angled Triangle.

4. Now from B draw a ray BY making an acute ∠CBY  on the side opposite to the vertex A.

5. Mark 5 points B1,B2,B3,B4 & B5 on BY such that BB1 = B1B2 = B2B3 = B3B4 =B4B5.

6.Join B3C and from B5 draw B5C’ || B3C intersecting BC at C’.

7. From point C’ draw C’A’ || CA intersecting AB at A’. Thus , ∆A’B’C’  is the required triangle whose sides are 5/3 of the corresponding sides of ∆ABC

Answer 2

Refer the attachment...