MCQ
ABCD is a rhombus such that $\angle A C B=40^{\circ}$. Then, $\angle A D B=$
- A$40^{\circ}$
- B$45^{\circ}$
- ✓$50^{\circ}$
- D$60^{\circ}$
✓
Answer
Correct option: C.
$50^{\circ}$
(c) $50^{\circ}$
Given that $\angle A C B=40^{\circ}$. Therefore, $\angle B C D=80^{\circ}$
and hence $\angle A D C=180^{\circ}-80^{\circ}=100^{\circ}$. Therefore, $\angle A D B=\frac{1}{2} \angle A D C=50^{\circ}$.
Given that $\angle A C B=40^{\circ}$. Therefore, $\angle B C D=80^{\circ}$
and hence $\angle A D C=180^{\circ}-80^{\circ}=100^{\circ}$. Therefore, $\angle A D B=\frac{1}{2} \angle A D C=50^{\circ}$.
Need a full question paper?
Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.
Explore more
Similar questions
The ratio of the volumes of two cones with equal heights and ratio of their radii as 2 : 5 is:
Zero of the zero polynomial is:
- 0
- 1
- Every real number.
- Not defined.
The diameter of the base of a cylinder of curved surface area 88cm2 and height 14cm is:
The perpendicular distance of the point $(-7,4)$ from $y$-axis is
→→
The number of spherical bullets each 5dm in diameter which can be cast from a rectangular block of lead 11m long, 10m broad and 5 high is:
The sides of a triangular flower bed are 5m, 8m and 11m. the area of the flower bed is:
If the radius of the base of a right circular cylinder is halved, keeping the same height, then the ratio of the volume of the reduced cylinder to the volume of the original cylinder is:
In Fig , two parallel lines $l$ and $m$ are intersected by a transversal $n$. Which one of the following statements is correct?
(a) $c+e=180^{\circ}$ as $c$ and $e$ are alternate interior angles.
(b) $d=h$ as $d$ and $h$ are corresponding angles.
(c) $b=g$ as $b$ and $g$ are corresponding angles.
(d) $a=e$ as $a$ and $e$ are alternate interior angles.
→(a) $c+e=180^{\circ}$ as $c$ and $e$ are alternate interior angles.
(b) $d=h$ as $d$ and $h$ are corresponding angles.
(c) $b=g$ as $b$ and $g$ are corresponding angles.
(d) $a=e$ as $a$ and $e$ are alternate interior angles.
In a bar graph, the height of a bar is proportional to the