Identify the triangle which has 66 angle and 24o angle

It is a right triangle

It is a right-triangle.

Adding the two angles together would equate to 90. A triangle equals a total of 180° so you would subtract 90 from 180 to find the third angle. 180-90=90. The last angle equals 90° so the type of triangle is a right-triangle because I had a 90° angle in it.