The minute hand at 15 minutes points to the 3, and the hour hand moves 1/4 of the way between the 3 and 4.
Each hour division is 30°, so 1/4 × 30° = 7.5°
The total angle is 90° − 7.5° = 67.5°
The equilateral triangle, square, and pentagon are polygons with straight sides, whereas the circle has no sides or vertices, making it the outlier.
"Obsolete" is the opposite of "modern," just as "dilapidated" (in poor condition) is the opposite of "renovated" (restored to good condition). The relationship is based on opposites.
Solve the system of equations: x + y = 12, x − y = 4.
Adding the equations:
2x = 16, so x = 8.
Subtracting: 2y = 8, so y = 4.
Thus, x × y = 8 × 4 = 24.
The pattern increases by consecutive odd numbers:
2 + 3 = 5, 5 + 5 = 10, 10 + 7 = 17, 17 + 9 = 27.
