Draw an isosceles right-angled triangle whose hypotenuse is 5.8 cm.
Right angled triangle is an isosceles triangle
Each of its acute angles =90/2= 45°

Steps of construction:
(i) Draw AB = 5.8 cm.
(ii) Construct ∠A = 45° and ∠B = 45° to meet each other at C.
(iii) ∠C = 180° – (45° + 45°) = 90°
(iv) ΔACB is the required isosceles right angle triangle.