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In Rhombus Abcd; (I) If ∠A = 74° ; Find ∠B and ∠C. (Ii) If Ad = 7.5 Cm ; Find Bc and Cd. - Mathematics

Sum

In rhombus ABCD;
(i) if ∠A = 74° ; find ∠B and ∠C.
(ii) if AD = 7.5 cm ; find BC and CD.

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Solution

AD || BC
∠A + ∠B = 180°
74° + ∠B = 180°
∠B =180° – 74°= 106°

opposite angles of Rhombus are equal.

∠A = ∠C = 74°

Sides of Rhombus are equal.

BC = CD = AD = 7.5 cm

(i) ∠B = 106° ; ∠C = 74°

(ii) BC = 7.5 cm and CD = 7.5 cm 

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APPEARS IN

Selina Concise Mathematics Class 8 ICSE
Chapter 17 Special Types of Quadrilaterals
Exercise 17 | Q 3 | Page 198
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