IM Geo.2.12 Practice: Proofs about Quadrilaterals
Lin is using the diagram to prove the statement, “If a parallelogram has one right angle, it is a rectangle.”
Given that is a parallelogram and angle is right, which reasoning about angles will help her prove that angle is also a right angle?
is an isosceles trapezoid.
Select all pairs of congruent triangles.
Match each conjecture with the rephrased statement of proof connected to the diagram.
Which of the following criteria always proves triangles congruent?
Select all that apply.
Here is a diagram
Select all true statements based on the diagram.
Diego states that diagonal WY bisects angles ZWX and ZYX.
Is he correct? Explain your reasoning.
Sketch the unique triangles that can be made with angle measures 80° and 20° and side length 5.
How do you know you have sketched all possibilities?