Shape is a figure closed by boundary created by lines, points and curves. Area measures extent of two-dimensional figures in plane. Standard unit of area is square meter (m²)
Fractions can be multiplied using ×, dot, or parentheses. Multiplication involves multiplying numerators and denominators. Product can be simplified by finding GCF of numerator and denominator
Area refers to surface, extent, or range. Area can be measured in square units. Area can refer to a region or geographical division
Octahedron is formed by joining two pyramids at bases. Contains 8 faces, 12 edges, and 6 vertices. Derived from Greek 'Oktaedron' meaning 8 faced. Can be regular with equal-sized faces or irregular
Triangle inscribed in semicircle of diameter AB has angle AOB of 90°
Quarter circle is one-fourth of a circle, bounded by curved arc and two perpendicular radii. Forms right angle (90°) with adjacent plane. Has rotational symmetry of order four. Divides coordinate plane into four quadrants