WGU D127 Module 1: Math for Elementary Educators Study Guide/ (Top 2024/2025 EXAM REVIEW PAPERS / GRADED A+/ 100% Accurate)

WGU D127 Module 1: Math for Elementary Educators Study Guide What does the arrow on a ray signify? -It extends indefinitely Acute angles measure -less than 90 degrees Right angles measure -exactly 90 degrees Obtuse angles measure -greater than 90 degrees, but less than 180 degrees Straight angles measure -exactly 180 degrees Reflex angles measure -greater than 180 degrees Supplementary angles are -two angles whose sum is equal to 180 degrees Complementary angles are -two angles whose sum is equal to 90 degrees Two angles are complementary. If one angle measures 30º, the other angle measures -60° (90°−30°= 60°) Polygon is a -closed figure with at least three straight sides. Vertex is a -point where two line segments meet to form an angle Regular polygon is a -polygon with equal sides and equal angles Irregular polygon is a -polygon whose sides are not all equal and whose angles have different measures Quadrilateral is a -flat shape with four straight sides and four angles Interior angle is an -angle inside a polygon that is formed by two of its sides Sum of Interior Angles of a Polygon -180°(n−2