In the following figure, AB ∥ CD. Find the value of x°. (Figure: lines AE and CE meet at the top point E, where the angle is x°. At A, the angle between AB and AE is 50°. C lies on the line from E going down towards AB, and the angle between CE and CD at C is 100°. AB and CD are parallel horizontal lines pointing the same way.)

If one angle of a triangle is 50° and difference between the remaining two angles is 30°, then the value of smaller angle is :

The value of x in the given figure is: (Figure: an arrowhead (concave quadrilateral) A–C–(inner vertex)–B. Angle at A = 55°, angle at C = 30°, angle at B = 45°; x is the angle at the inner (concave)…

If a, b and c are the sides of a right-angled triangle, where a > b > c, then what is the value of the expression (a + b + c) (a + b - c) (a - b + c) (a - b - c)?

In a quadrilateral ABCD, AB = 6 cm, BC = 18 cm, CD = 6 cm and DA = 10 cm. If the diagonal BD = x, then which one of the following is correct?

Let a = 10 cm, b = 3 cm and c = 6 cm. Which of the following is true?