WGU D128 MATHEMATICS FOR ELEMENTARY EDUCATORS OA EXAM ACTUAL EXAM
QUESTIONS AND CORRECT DETAILED ANSWERS|ALREADY GRADED A+
line -(answer)A straight one-dimensional figure that extends infinitely in both directions.
perpendicular -(answer)Describes lines intersecting each other to form a 90 degree, or right, angle.
circle -(answer)The set of all points that are equidistant from a point.
radius -(answer)The distance from the center of a circle or sphere to any point on the outer edge.
isosceles trapezoid -(answer)Quadrilateral with one pair of parallel opposite sides (the bases) and
another pair of equal opposite sides.
interior angle -(answer)An angle inside a shape between two joined sides.
square -(answer)A quadrilateral with four equal sides and four 90° angles.
regular polygon -(answer)A polygon with equal sides and equal angles.
central angle -(answer)Shape formed when 2 lines or rays meet with vertex meets only the center point
of the circle.
hypotenuse -(answer)The largest side of a right triangle, opposite the right angle. Only right triangles
have a hypotenuse.
kite -(answer)Quadrilateral with two sets of adjacent equal sides and one set of equal opposite angles.
,WGU D128 MATHEMATICS FOR ELEMENTARY EDUCATORS OA EXAM ACTUAL EXAM
QUESTIONS AND CORRECT DETAILED ANSWERS|ALREADY GRADED A+
reflex angle -(answer)Angles greater than 180°.
vertical line -(answer)A line that runs up and down on the coordinate plane, parallel to the y-axis. It has
no run, or change in x-value.
parallel -(answer)Two lines, line segments, rays, or planes that are the same distance from one another
and never intersect.
trapezoid -(answer)Quadrilateral with one pair of parallel opposite sides.
bisect -(answer)To divide into two equal parts.
isosceles triangle -(answer)A triangle with two equal sides and two equal corresponding angles.
angle -(answer)The amount of rotation (often measured in degrees) needed to make one line segment,
ray, or line identical with another line segment, ray, or line.
inscribed angles -(answer)Shape formed when 2 lines or rays meet with a vertex that meets the
circumference of a circle.
vertex -(answer)A point where two line segments meet to form an angle.
irregular polygon -(answer)A polygon whose sides are not all equal and whose angles have different
measures.
straight angle -(answer)An angle that measures 180 degrees.
, WGU D128 MATHEMATICS FOR ELEMENTARY EDUCATORS OA EXAM ACTUAL EXAM
QUESTIONS AND CORRECT DETAILED ANSWERS|ALREADY GRADED A+
line segment -(answer)Shortest distance between two points; completely straight with two endpoints.
rectangle -(answer)Quadrilateral with four right angles, equal opposite sides, and two sets of parallel
opposite sides.
sector -(answer)A portion of a circle defined by two radii and an intercepted arc.
triangle inequality theorem -(answer)For every triangle, the sum of any two sides is always greater than
the third side.
parallelogram -(answer)Quadrilateral with opposite, parallel, equal sides and equal opposite angles.
ray -(answer)A line with a single endpoint (or point of origin) that extends infinitely in the other
direction.
acute angle -(answer)Angles less than 90°.
equilateral triangle -(answer)A triangle with three equal sides and three angles of 60 degrees each.
x-axis -(answer)The horizontal line that passes through the origin on a coordinate plane.
origin -(answer)The point on a coordinate plane where the x-axis and y-axis intersect. Typically, the
point represents 0 on both axes.
QUESTIONS AND CORRECT DETAILED ANSWERS|ALREADY GRADED A+
line -(answer)A straight one-dimensional figure that extends infinitely in both directions.
perpendicular -(answer)Describes lines intersecting each other to form a 90 degree, or right, angle.
circle -(answer)The set of all points that are equidistant from a point.
radius -(answer)The distance from the center of a circle or sphere to any point on the outer edge.
isosceles trapezoid -(answer)Quadrilateral with one pair of parallel opposite sides (the bases) and
another pair of equal opposite sides.
interior angle -(answer)An angle inside a shape between two joined sides.
square -(answer)A quadrilateral with four equal sides and four 90° angles.
regular polygon -(answer)A polygon with equal sides and equal angles.
central angle -(answer)Shape formed when 2 lines or rays meet with vertex meets only the center point
of the circle.
hypotenuse -(answer)The largest side of a right triangle, opposite the right angle. Only right triangles
have a hypotenuse.
kite -(answer)Quadrilateral with two sets of adjacent equal sides and one set of equal opposite angles.
,WGU D128 MATHEMATICS FOR ELEMENTARY EDUCATORS OA EXAM ACTUAL EXAM
QUESTIONS AND CORRECT DETAILED ANSWERS|ALREADY GRADED A+
reflex angle -(answer)Angles greater than 180°.
vertical line -(answer)A line that runs up and down on the coordinate plane, parallel to the y-axis. It has
no run, or change in x-value.
parallel -(answer)Two lines, line segments, rays, or planes that are the same distance from one another
and never intersect.
trapezoid -(answer)Quadrilateral with one pair of parallel opposite sides.
bisect -(answer)To divide into two equal parts.
isosceles triangle -(answer)A triangle with two equal sides and two equal corresponding angles.
angle -(answer)The amount of rotation (often measured in degrees) needed to make one line segment,
ray, or line identical with another line segment, ray, or line.
inscribed angles -(answer)Shape formed when 2 lines or rays meet with a vertex that meets the
circumference of a circle.
vertex -(answer)A point where two line segments meet to form an angle.
irregular polygon -(answer)A polygon whose sides are not all equal and whose angles have different
measures.
straight angle -(answer)An angle that measures 180 degrees.
, WGU D128 MATHEMATICS FOR ELEMENTARY EDUCATORS OA EXAM ACTUAL EXAM
QUESTIONS AND CORRECT DETAILED ANSWERS|ALREADY GRADED A+
line segment -(answer)Shortest distance between two points; completely straight with two endpoints.
rectangle -(answer)Quadrilateral with four right angles, equal opposite sides, and two sets of parallel
opposite sides.
sector -(answer)A portion of a circle defined by two radii and an intercepted arc.
triangle inequality theorem -(answer)For every triangle, the sum of any two sides is always greater than
the third side.
parallelogram -(answer)Quadrilateral with opposite, parallel, equal sides and equal opposite angles.
ray -(answer)A line with a single endpoint (or point of origin) that extends infinitely in the other
direction.
acute angle -(answer)Angles less than 90°.
equilateral triangle -(answer)A triangle with three equal sides and three angles of 60 degrees each.
x-axis -(answer)The horizontal line that passes through the origin on a coordinate plane.
origin -(answer)The point on a coordinate plane where the x-axis and y-axis intersect. Typically, the
point represents 0 on both axes.
