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Transcript
Bell Work: 1. Are these two triangles congruent? Justify your answer 2. Construct two triangles that are congruent, by giving measurements to three things; some combination of sides and angles Bell Work from last time 1. Identify the angle relationships in the figure to the right 2. Are any of the lines in the figure parallel? How do you know? 3. Write the equation of a line in slopeintercept from which has a slope of 7 and a y-intercept of -3 When are two triangles congruent? Barney Says… Do you agree with Barney? Explain why or why not. If you don’t agree, explain which combinations of sides and angles you think can be used to prove triangles are congruent Can we conclude these triangles are congruent? 4.3: Triangle congruence by ASA and AAS Postulate 4-3: Angle-Side-Angle(ASA) Postulate If two angles and the included side of two triangles are congruent, then the two triangles are congruent The included side of a triangle is the one which lies between two given angles Which two triangles are congruent? Theorem 4-2: Angle-Angle-Side(AAS) Theorem If two angles and the non-included side of one triangle is congruent to those of another triangle, the triangles are congruent Find the value for x so that the triangles are congruent, and state which theorem/postulate shows they’re congruent 4.4: Using Corresponding Parts of Congruent Triangles (CPCTC) Previously, we learned that two triangles are congruent IF every side and every angle is congruent. If two triangles are congruent, what can we then conclude about all sides and angles of the two triangles? Homework: Congruent Triangles Worksheet Prepare for a quiz retake on Wednesday