(02.06 MC) The figure below shows a quadrilateral ABCD. Sid…

(02.06 MC) The figure below shows a quadrilateral ABCD. Sides AB and DC are congruent and parallel: A student wrote the following sentences to prove that quadrilateral ABCD is a parallelogram: Side AB is parallel to side DC, so the alternate interior angles, angle ABD and angle CDB, are congruent. Side AB is equal to side DC, and DB is the side common to triangles ABD and BCD. Therefore, the triangles ABD and CDB are congruent by SSS postulate. By CPCTC, angles DBC and BDA are congruent and sides AD and BC are congruent. Angle DBC and angle BDA form a pair of alternate interior angles. Therefore, AD is congruent and parallel to BC. Quadrilateral ABCD is a parallelogram because its opposite sides are equal and parallel. Which statement best describes a flaw in the student’s proof?

(02.04 MC) Triangle ABC is a right triangle. Point D is the…

(02.04 MC) Triangle ABC is a right triangle. Point D is the midpoint of side AB, and point E is the midpoint of side AC. The measure of angle ADE is 68°. The following flowchart with missing statements and reasons proves that the measure of angle ECB is 22°: Which statement and reason can be used to fill in the numbered blank spaces?

(02.02 MC) Figure EFGH on the grid below represents a trape…

(02.02 MC) Figure EFGH on the grid below represents a trapezoidal plate at its starting position on a rotating machine platform: The plate is rotated 360° about the origin in the clockwise direction. Which of the following is formed when the arcs of rotation are drawn for each point as it is rotated?