They have two equal sides, but what about their angles?
CCSS.MATH.CONTENT.HSG.CO.C.10Prove theorems about triangles.
Theorems include: measures of interior angles of a triangle sum to 180°; base angles of isosceles triangles are congruent; the segment joining midpoints of two sides of a triangle is parallel to the third side and half the length; the medians of a triangle meet at a point.
LTI launch URL
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https://schoolyourself.org/page/lti/sy/geometry/isosceles-angles
