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Select all quadrilaterals that have 180 degree rotational symmetry.
Select the statement that must be true.
EFGH is a parallelogram and angle HEF is a right angle.
Select all statements that must be true.
Figure ABCD is a parallelogram. Is triangle ADB congruent to triangle CBD?
Show or explain your reasoning.
Figure KLMN is a parallelogram. Prove that triangle KNL is congruent to triangle MLN.
This lesson is from Illustrative Mathematics. Geometry, Unit 2, Lesson 15. Internet. Available from https://curriculum.illustrativemathematics.org/HS/teachers/2/2/15/index.html ; accessed 29/July/2021.
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