Question

construct an equilateral triangle DEF of side 3.5 CM.

Answer 1

Hey mate..
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See the pic and read the steps of construction attentively !

Hope it helps ☺

Answer 2

The constructed ∆DEF is attached.

Given:

• An equilateral triangle DEF of side 3.5 cm.

To find:

• Construction of ∆DEF.

Solution:

Steps of construction:

1. Draw base line DE of 3.5 cm.
2. Draw $\angle D= 60^{\circ}$ and extended the line.
3. Measure an arc of radius on terminal ray of 60° angle; this point is F.
4. Join E and F.
5. Construction of equilateral ∆DEF is over.

Justification:

On measurement of sides it found that all sides are equal to 3.5 cm and all angles are 60°.

Thus,

The constructed ∆DEF has been over.

Learn more:

1) Draw a equilateral triangle of sides 6.5 cm and locate its orthocentre

https://brainly.in/question/5088435

2) How to construct the triangle with given measures.

(1) Δ DEF : m∠D = 35°, m∠F = 100°, l(DF) = 4.8 cm

https://brainly.in/question/4841018