Triangle Congruence

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Triangle Congruence by Mind Map: Triangle Congruence

1. isometry

1.1. include rotation, translation, reflection, glides, and the identity map

2. dilation

2.1. the action of speaking or writing at length

3. rigid transformation

3.1. is a transformation of the plane that preserves length

4. acute triangle

4.1. triangle with all three angles acute (less than 90°)

5. equiangular triangle

5.1. a triangle where all three interior angles are equal in measure.

6. right triangle

6.1. a triangle that is 90 degrees

7. obtuse triangle

7.1. is a triangle in which one of the angles is an obtuse angle.

8. equilateral triangle

8.1. a triangle in which all three sides are equal.

9. isosceles triangle

9.1. an isosceles triangle is a triangle that has two sides of equal length

10. scalene triangle

10.1. is a triangle that has three unequal sides, such as those illustrated above.

11. auxiliary line

11.1. is an extra line needed to complete a proof in plane geometry

12. corollary

12.1. forming a proposition that follows from one already proved.

13. interior

13.1. emote from the coast or frontier; inland.

14. exterior

14.1. forming, situated on, or relating to the outside of something

15. interior angle

15.1. the angle between adjacent sides of a rectilinear figure.

16. exterior angle

16.1. the angle between a side of a rectilinear figure and an adjacent side extended outward.

17. remote interior angle

17.1. In a triangle, each exterior angle has two remote interior angles