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Learn what it means for two figures to be congruent, and how to determine whether two figures are congruent or not. Use this immensely important concept to prove various geometric theorems about triangles and parallelograms.
- Unit Test
Unit Test - Congruence | Geometry (all content) | Math |...
- Working With Triangles
Working With Triangles - Congruence | Geometry (all content)...
- Theorems Concerning Quadrilateral Properties
Theorems Concerning Quadrilateral Properties - Congruence |...
- Transformations and Congruence
Transformations and Congruence - Congruence | Geometry (all...
- Triangle Congruence
Triangle Congruence - Congruence | Geometry (all content) |...
- Theorems Concerning Triangle Properties
Theorems Concerning Triangle Properties - Congruence |...
- Why SSA Isn't a Congruence Postulate/Criterion Opens a Modal
Why SSA Isn't a Congruence Postulate/Criterion Opens a Modal...
- Proof: The Diagonals of a Kite Are Perpendicular Opens a Modal
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- Unit Test
Nov 1, 2020 · This video is a brief review of four common symbols used in geometry: parallel, congruent, similar, and perpendicular....more.
- 5 min
- 46.9K
- FerranteMath
Notice how they appear as sets: the lines with one feather are parallels, and the lines with two feathers are parallel. A "box" at the point of intersection indicates the lines are perpendicular. This "box" represents the presence of a right angle (just as it did in the right triangle).
Mar 4, 2020 · We can parallel lines with compass and straightedge by creating a pair of congruent corresponding angles on a transversal. View more lessons or practice this subject at...
- 2 min
- 44.3K
- Khan Academy
Two definitions of a parallel curve: 1) envelope of a family of congruent circles, 2) by a fixed normal distance. The parallel curves of a circle (red) are circles, too. A parallel of a curve is the envelope of a family of congruent circles centered on the curve. It generalises the concept of parallel (straight) lines.
Explain that the alternate interior angles are represented by two angle pairs 3 and 6, as well as 4 and 5 with separate colors respectively. So if ∠ 3 is congruent to ∠ 6, and if ∠ 3 is congruent to ∠ 5, then the two lines are parallel.
In geometry, parallel lines are coplanar infinite straight lines that do not intersect at any point. Parallel planes are planes in the same three-dimensional space that never meet. Parallel curves are curves that do not touch each other or intersect and keep a fixed minimum distance.
