Honors Geometry Unit 5 Notes: Difference between revisions
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Proofs | ==== Proofs ==== | ||
* the sum of the measures of the interior angles of a triangle is $180^{\circ}$ | |||
* the base angles of isosceles triangles are congruent | |||
* the segment joining the midpoints of two sides of a triangle is parallel to the third side and half the length | |||
* a line parallel to one side of a triangle divides the other two proportionally, and conversely | |||
* the Pythagorean Theorem using triangle similarity. | |||
Revision as of 19:35, 4 October 2025
Proofs
- the sum of the measures of the interior angles of a triangle is $180^{\circ}$
- the base angles of isosceles triangles are congruent
- the segment joining the midpoints of two sides of a triangle is parallel to the third side and half the length
- a line parallel to one side of a triangle divides the other two proportionally, and conversely
- the Pythagorean Theorem using triangle similarity.