The diagrams for b ans c are the 2nd and 3rd
The diagrams for b ans c are the 2nd and 3rd (b) In figure (it) given below, AB II DC, ZA = 900, DC = 7 cm, A AC = 25 cm. Calculate BC. (c) In figure (iii) given below, ABCDis a square of side 7 cm. If (i) prove that EFGH is a rectangle. (ii) find the area and perimeter Of EFGH. (it) (iii)

Hi,
B)


Here angle A= 90 so AD will be perpendicular to AB and hence angle D will also be 90 degree so, In right angle triangle ADC, AD = 252-72= 24 now AD = CM= 24 cm Also CD = AM= 7 cm so MB= 17-7 = 10 cmso in right angle triangle CMB, BC= 242+102=26 cm
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