Construct an isosceles triangle whose base is $ 8 \mathrm{~cm} $ and altitude $ 4 \mathrm{~cm} $ and then another triangle whose sides are $ 3 / 2 $ times the corresponding sides of the isosceles triangle.

Given:

An isosceles triangle whose base is \( 8 \mathrm{~cm} \) and altitude \( 4 \mathrm{~cm} \).

To do:

We have to construct an isosceles triangle whose base is \( 8 \mathrm{~cm} \) and altitude \( 4 \mathrm{~cm} \) and then another triangle whose sides are \( 3 / 2 \) times the corresponding sides of the isosceles triangle.

Solution:

Steps of construction:

(i) Draw a line segment $BC = 8\ cm$ and draw its perpendicular bisector $DX$ and cut off $DA = 4\ cm$.

(ii) Join $AB$ and $AC$.

$ABC$ is the required triangle.

(iii) Draw a ray $DY$ making an acute angle with $OA$ and cut off three equal parts making $DD_1 = D_1D_2 =D_2D_3 = D_3D_4$

(iv) Join $D_2A$

(v) Draw $D_3A’$ parallel to $D_2A$ and $A’B’$ parallel to $AB$ meeting $BC$ at $C’$ and $B’$ respectively.

$B’A’C’$ is the required triangle. 

Tutorialspoint

e

Updated on: 10-Oct-2022

44 Views

Kickstart Your Career

Get certified by completing the course

Get Started