How would you slice through a cube such that the figure formed by the intersecting plane is a triangle?
A. from the upper left edge of the cube to the lower right edge
B. perpendicular to the base
C. parallel to the base
D. passing through three intersecting edges

In the following diagram it is given that dec, ab || dc, ad || eb, and ad is congruent to bc. a)why isn't abc a parallelogram even though it has a pair of parallel sides and a pair of congruent sides b)explain why be must be congruent to bc. further explain what type of triangle this makes triangle abc and what it tells you about angle 1 and angle 2c) finally why must angle 3 be congruent to angle 1? further, explain why we know that angle 3 is congruent to angle 2