Advertisements
Advertisements
प्रश्न
In parallelogram ABCD, ∠A = 90°
(i) What is the measure of angle B.
(ii) Write the special name of the parallelogram.
Advertisements
उत्तर
In parallelogram ABCD, ∠A = 90°
(i) ∵ In a parallelogram, adjacent angles are supplementary
∴ ∠A + ∠B = 180°
⇒ 90° + ∠B = 180°
⇒ ∠B = 180° - 90°
⇒ ∠B = 90°
(ii) The name of the given parallelogram is a rectangle.
APPEARS IN
संबंधित प्रश्न
Given here are some figures:
 |
 |
 |
 |
 |
 |
 |
 |
Classify each of them on the basis of the following:
- Simple curve
- Simple closed curve
- Polygon
- Convex polygon
- Concave polygon
The perimeter of a parallelogram is 22 cm . If the longer side measures 6.5 cm what is the measure of the shorter side?
PQRSTU is a regular hexagon. Determine each angle of ΔPQT.
In the given figure, ABCD is a trapezium. Find the values of x and y.
Complete the following statement by means of one of those given in brackets against each:
If one pair of opposite sides are equal and parallel, then the figure is ........................
The angles of a pentagon are x°, (x - 10)°, (x + 20)°, (2x - 44)° and (2x - 70)°. Find the angles.
One angle of a hexagon is 140° and the remaining angles are in the ratio 4 : 3 : 4 : 5 : 4. Calculate the measures of the smallest and the largest angles.
One angle of a pentagon is 160° and the rest are all equal angles. Find the measure of the equal angles.
The number of obtuse angles in the following figure is ______.
Draw a rough sketch of a quadrilateral KLMN. State two pairs of opposite sides.
