Question

In a Quadrilateral ABCD, ZA = 2C, ZB 2LA, ZD = LA. Then 2A. B. 2C and D [1 8.

respectively are:

a) 20°, 30°, 160° and 160°. b) 100°, 100°, 80° and 80°

c)90°, 90° , 90° and 90°. d) 80°, 160°, 80° and 40°

Answer 1

Answer:

Step-by-step(i) ∠D+∠B=180  

∘

?  

(ii) AB=DC=8 cm, AD=4 cm and BC=4.4 cm?  

(iii) ∠A=70  

∘

 and ∠C=65  

∘

?

Medium

Solution

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(i) ∠D+∠B=180  

∘

 

It may or may not be possible. the sum of measure of adjacent angles should be 180  

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.

(ii) AB=DC=8 cm, AD=4 cm and BC=4.4 cm

No, opposite sides are of different lengths.

(iii) ∠A=70  

∘

 and ∠C=65  

∘

 

No, opposite angles should be equal. explanation: