The angles of a quadrilateral are in an arithmetic sequence. The largest angle is `150^@`. Find other angles.

The angles of a pentagon are in arithmetic sequence. Prove that its smallest angle is greater than 36^@ .

If the angles of a right triangle are in an arithmetic sequence,find them by making suitable equations.

The angles in a 9 sided polygon are in arithmetic sequence. Is 100^o the smallest angle of the polygon? - Justify your answer.

If the angles of a triangle are in the ratio 3:4:5 , then the ratio of the largest side to the smallest side of the triangle is :

One angle of a triangle is equal to the sum of the other two angles of that triangle. The two smaller angles are in the ratio 2:3. What are the angles of triangle?

The sum of the first five terms of an arithmetic sequence is 150 and the'sum of the first ten terms is 550 . i) What is the third term of the sequence? ii) What is the eighth term? iii) What are the first three terms of the sequence?

The algebraic form of an arithmetic sequence is 8n+7 . Find the sum of first 30 terms of this sequence.

One angle of an isosceles triangle is 80^(circ) . What are the other two angles?.