Triangles, circles, polygons, coordinate geometry, and 2D shapes
Sides, angles, area, and perimeter using Pythagorean theorem
Solve any triangle from SSS, SAS, ASA, AAS, or SSA
Area, circumference, arc length, and sector area
Find any side of a right triangle from the other two
Area, perimeter, and height of a trapezoid
Area, perimeter, diagonal, and height of a parallelogram
Area and perimeter of any regular polygon (3–20 sides)
Area, perimeter (approximation), and foci of an ellipse
Arc length and sector area from radius and central angle
Slope, distance, midpoint, and equation of a line