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Answers
Step-by-step explanation:
Solution 7.
PROPERTIES RHOMBUS :-
1. All sides are equal.
2. Opposite angles are equal.
one side of Rhombus is 4cm { given }
Thus, all sides of Rhombus are also of 4cm.
one angle of Rhombus is angle BAC 60° {given}
Thus its opposite angle BDC is also 60°.
Sum of interior angles = 360°
angle BAC + angle BDC + angle ACD + angle DBA =360°
60°+60°+ x° + x° = 360°
120° + 2x = 360°
2x = 360°-120°
2x = 240°
x = 240°÷2 = 120°
Angle ACD and angle DBA = 120°
Now , construct the given figure. [ refer to the attachmemt ]
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Solution 8.
Steps of Construction :-
Step 1- First , make diagonal of 6cm AC.
Step 2- With A as the centre , draw an arc of radius 5cm.
Step 3- With C as the centre , draw an arc of radius 4cm.
Step 4- D is the point of intersection of the two arcs. Also, mark D and complete ABCD.
Step 5- ABCD is the required quadrilateral.
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