Mathematics for Elementary Educators -
D128 Exam Questions With Correct Answers
100% Verified.
Line segment - Answer✔part of a line with two endpoints
Line - Answer✔extends indefinitely in both directions
point - Answer✔has no size, only location
ray - Answer✔extends indefinitely in one direction
acute angle - Answer✔an angle that measures less than 90 degrees
right angle - Answer✔an angle that measures 90 degrees
obtuse angle - Answer✔An angle that measures more than 90 degrees but less than 180
degrees
straight angle - Answer✔an angle that measures 180 degrees
reflex angle - Answer✔an angle that is greater than 180 degrees because the angle is bent
beyond the straight line
supplementary angles - Answer✔two angles that add up to 180 degrees
complementary angles - Answer✔two angles that add up to 90 degrees
polygon - Answer✔closed figure with at least three straight sides
vertex - Answer✔the point where two sides meet
regular polygon - Answer✔a polygon with all sides and all angles equal
irregular polygon - Answer✔a polygon with sides that are not all congruent (same size)
quadrilateral - Answer✔a four-sided polygon
interior angles - Answer✔angles on the inside of polygon that form two adjacent sides
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