In ΔABC, AB = AC and ∠B = 40 °, find the value of ∠A.

If the ratio of the measurements of the three angles of a triangle is 2: 3: 4, then the measurement of its largest angle is.

If the ratio of the measurement of the four angles of a quadrilateral is 1: 2: 3: 4, then the measurement of its smallest angle is-

If one angle is half of its complementary angle, find that angle.

(2x + 4) and (x - 1) are the angle pairs of angles of measurement, then their measurement will be

The value of P + Q in the following table is-

In the following frequency table, the value of H will be

The formula is a square of 35 with the multiple method.