Solve for Solve for x = _____ and The sum of all interior Sum of angles is 180°. Interior & Exterior The sum of a straight Angles line is 180°. -If 11. Solve for x. 12. 2 angles in a triangle is an isosceles triangle with are congruent, then the AB and BC as the legs. Solve for x. opposite them are congruent. Base Angles -If 2 sides in a triangle are congruent, then the angles opposite them are congruent. Given: Prove: State what is given first, and mark your picture! Step 1 Write down – the givens Step 2 – Make any marks that you know are congruent (reflexive property, Proofs vertical angles, alternate interior angles) Given: Step 3 The last – Prove: Statement will always be showing the Triangles are (SSS, SAS, ASA, AAS, HL)
Sum of Interior & Exterior Angles The sum of all interior angles is 180°. The sum of a straight line is 180°. Solve for Solve for x = _____ and Base Angles -If 2 angles in a triangle are congruent, then the opposite them are congruent. -If 2 sides in a triangle are congruent, then the angles opposite them are congruent. 11. Solve for x. 12. is an isosceles triangle with AB and BC as the legs. Solve for x. Given: Prove: Given: Prove: Proofs State what is given first, and mark your picture! Step 1 – Write down the givens Step 2 – Make any marks that you know are congruent (reflexive property, vertical angles, alternate interior angles) Step 3 – The last Statement will always be showing the Triangles are (SSS, SAS, ASA, AAS, HL)
similarity_and_congruence_with_notes_-unit_2.docx