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9-50.

Decide if the pair of triangles is congruent. If it is, create a flowchart that justifies your decision.

Quadrilateral, A,B,C,D, with diagonal from vertex b, to vertex C, creating 2 triangles, with angles labeled as follows: angle A,C,B, 1 tick mark, angle A,B,C, 2 tick marks, angle C,B,D, 1 tick mark, angle b,C,D, 2 tick marks.


Read Math Note box in section 7.1.3 on properties to justify congruence.
Read Math Note box 7.1.7 on conditions for triangle congruence.

Do these triangles have any congruent angles?
How would you represent that in a proof? What reason do you have for it?

Do these triangles have any sides that are congruent that help to satisfy one of the conditions for congruence?
How would you represent that in a proof? What reason do you have for it?