Trapezoid Base Angles Congruent Isosceles Theorem. Isosceles Triangle Theorem: If two sides of a triangle are congruent, then the angles opposite those sides are congruent. Converse of the Base Angles Theorem: If two sides of a triangle are congruent, then the angles opposite them are congruent. Proof Ex. Isosceles Triangle Base Angles Theorem & Converse - U4L4. 4. Geometry McDougal Littell Ch. The Pythagorean converse theorem can help us in classifying triangles. Base Angle Theorem "If two triangles have congruent sides, then the angles opposite those sides are congruent." Thus, a theorem and its converse are converses of each other. Add answer + 5 pts Log in to add comment 1 2 28 + 28 + 4y = 180 y = 31 3 4 Find the value of x. The Base Angles Theorem If two sides of a triangle are congruent, then the angles opposite those sides are congruent. We explain Isosceles Triangle Base Angles Theorem Converse with video tutorials and quizzes, using our Many Ways(TM) approach from multiple teachers. Start with the following isosceles triangle. Prove an equilangular triangle is equilateral. And as I mentioned on your other question, the converse to this theorem (regardless of what name you want to give it), is also valid. Example: 5. If triangle ABC is isosceles and side AB ≌ Side AC, THEN **
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