Abeka Plane Geometry Quiz 14
six ways to prove a quadrilateral is a parallelogram
1. both pairs of opposite sides are parallel 2. both pairs of opposite sides are congruent 3. both pairs of opposite angles are congruent 4. one angle is supplementary to both of its consecutive angles 5. both diagonals bisect each other 6. one pair of sides is congruent and parallel
The sum of the four angles of a quadrilateral is equal to ______
2 straight angles (360°)
The perpendicular to the base of an isosceles triangle that passes through the vertex will also _______the vertex angle
bisect*
The shortest line that can be drawn from a point to a line is the ______
perpendicular*