MCQ 11 Mark
If opposite angles of a rhombus are (2x)° and (3x – 40)°, then the value of x is ____.
- A100°
- B80°
- C160°
- ✓40°
Answer
View full question & answer→Correct option: D.
40°
2x = 3x – 40 … [Pythagoras theorem]
∴ x = 40°
40°
∴ x = 40°
40°
Questions
MCQ(1M)
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3 questions · auto-graded multiple-choice test.
MCQ 21 Mark
If the diagonal of a square is $22\sqrt2$ cm, then the perimeter of square is ____.
- A$24 cm$
- B$24\sqrt2 cm$
- ✓$48 cm$
- D$48\sqrt2 cm$
Answer
View full question & answer→Correct option: C.
$48 cm$
In ∆ABC,
$AC^2 = AB^2 + BC^2$
$\therefore\left(12^2 \sqrt{ } 2\right)^2=A B^2+A B^2 $
$\therefore A B^2=\frac{12^2 \times 2}{2}=12^2 $
$\therefore A B=12 cm $
$\therefore \text { Perimeter of } \square ABCD =4 \times 12=48 cm$
$48 cm$
$AC^2 = AB^2 + BC^2$
$\therefore\left(12^2 \sqrt{ } 2\right)^2=A B^2+A B^2 $
$\therefore A B^2=\frac{12^2 \times 2}{2}=12^2 $
$\therefore A B=12 cm $
$\therefore \text { Perimeter of } \square ABCD =4 \times 12=48 cm$
$48 cm$
MCQ 31 Mark
If all pairs of adjacent sides of a quadrilateral are congruent, then it is called ____.
- Arectangle
- Bparallelogram
- Ctrapezium
- ✓rhombus
Answer
View full question & answer→Correct option: D.
rhombus
rhombus