Question

Prove that ∆RSV ≅ ∆RKV, if RS = RK = 7 cm and RV = 5 cm and RV is perpendicular to SK.​

Answer 1

Step-by-step explanation:

LengthofDE=3.5cm

Step-by-step explanation:

Midpoint Theorem:

The line segment joining the midpoints of two sides of a triangle is parallel to the third side and also half of it .

Given :

In ∆ABC , AB = 5 cm ,

BC = 8 cm,

and CA = 7 cm ,

D and E are respectively the midpoints of AB and BC .

DE = \frac{1}{2} \times ACDE=21×AC

= \frac{1}{2} \times 7=21×7

= 3.5 \:cm=3.5cm

Therefore.,

\red { Length \: of \: DE } \green {= 3.5 \:cm }LengthofDE=3.5cm

Answer 2

Answer:

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