Search
Create
Log in
Sign up
Log in
Sign up
Triangle Congruence Naming
STUDY
Flashcards
Learn
Write
Spell
Test
PLAY
Match
Gravity
Terms in this set (16)
Obtuse triangle
A triangle with one obtuse angle (an angle whose measure is over 90 degrees)
Acute triangle
A triangle with three acute angles (three angles whose measures are less than 90 degrees)
Right triangle
A triangle with one right angle (an angle whose measure is 90 degrees)
Equiangular triangle
A triangle with three congruent acute angles (three angles whose measures are each 60 degrees)
Equilateral triangle
A triangle with three congruent sides
Isosceles triangle
A triangle with two congruent sides
Scalene triangle
A triangle with no congruent sides
When classifying triangles by angle measures, the classifications are:
Acute triangle, Obtuse triangle, Right triangle, Equiangular triangle
When classifying triangles by side lengths, the classifications are:
Equilateral triangle, Isosceles triangle, Scalene triangle
In an equilateral triangle, how many (if any) angles are congruent?
All three!
In an isosceles triangle, how many (if any) angles are congruent?
Two!
In a scalene triangle, how many (if any) angles are congruent?
None!
The sum of the angle measures of a triangle is:
180 degrees
Third Angles Theorem
If two pairs of angles in one triangle are congruent to pairs of angles in another triangle, then the third pairs are also congruent.
External Angle Theorem
The Exterior angle is congruent to the sum of the opposite angles.
Interior Angles
The angles inside of the triangle that sum to 180 degrees.
YOU MIGHT ALSO LIKE...
Triangle Review
13 Terms
Kerry_Moultrup
Angles/Triangles
21 Terms
nolene_pillay
Types of Angles
12 Terms
aggielam26
Angles and Triangles
23 Terms
Ashley_Cozza
OTHER SETS BY THIS CREATOR
Unit 10 Special Segments in Circles
16 Terms
jordanruiz55
Similarity
20 Terms
jordanruiz55
Unit 9 CoFunctions
20 Terms
jordanruiz55
Trigonometry - Find Side Lengths & Angle Measures aka Best one
29 Terms
jordanruiz55
THIS SET IS OFTEN IN FOLDERS WITH...
Isosceles Triangle
6 Terms
jordanruiz55
Isosceles Triangle Numbers
15 Terms
jordanruiz55
Side angle side and spiral
12 Terms
jordanruiz55
Unit 4 Triangle Congruence
15 Terms
jordanruiz55
;