Advertisements
Advertisements
प्रश्न
A quadrilateral has three acute angles. If each measures 80°, then the measure of the fourth angle is ______.
पर्याय
150°
120°
105°
140°
Advertisements
उत्तर
A quadrilateral has three acute angles. If each measures 80°, then the measure of the fourth angle is 120°.
Explanation:
Let the fourth angle be x,
Then 80° + 80° + 80° + x = 360° ...[Sum of all the angles of quadrilateral is 360°]
⇒ 240° + x = 360°
⇒ x = 360° – 240°
⇒ x = 120°
APPEARS IN
संबंधित प्रश्न
Find x + y + z
Find x in the following figures.
Three angles of a quadrilateral are respectively equal to 110°, 50° and 40°. Find its fourth angle
The angles of a quadrilateral are in the ratio 3 : 5 : 9 : 13 Find all the angles of the quadrilateral.
Two opposite angles of a parallelogram are (3x – 2)° and (50 – x)°. Find the measure of each angle of the parallelogram .
If the angles of a quadrilateral are in the ratio 3 : 5 : 9 : 13, then find the measure of the smallest angle.
Diagonals necessarily bisect opposite angles in a
The two diagonals are equal in a
The figure formed by joining the mid-points of the adjacent sides of a square is a
In ΔABC, ∠A = 30°, ∠B = 40° and ∠C = 110°. The angles of the triangle formed by joining the mid-points of the sides of this triangle are
