A, B, C and D are four angles at a point so that A+B+C+D=4 right angles, out of these A and B are acute angles while C and D are obtuse angles. Which of the following relations may be true?1. A+B=C+D 2. A+C=B+D 3. A+D=B+C

A, B, C and D are four angles at a point so that A+B+C+D=4 right angle

1.	A, B, C and D are four angles at a point so that A+B+C+D=4 right angles, out of these A and B are acute angles while C and D are obtuse angles. Which of the following relations may be true?1. A+B=C+D 2. A+C=B+D 3. A+D=B+C
A.	2 and 3 only
B.	1 and 3 only
C.	1 and 2 only
D.	3 only
Answer» B. 1 and 3 only

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A, B, C and D are four angles at a point so that A+B+C+D=4 right angles, out of these A and B are acute angles while C and D are obtuse angles. Which of the following relations may be true?1. A+B=C+D 2. A+C=B+D 3. A+D=B+C

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