Classifying Triangles
Angles, Angles, & Angles
SSS, SAS, ASA, & AAS Congruence
Right Triangles
Isosceles and Equilateral Triangles
100
No Equal Sides or Angles
What is Scalene
100
Number of angles in a triangle.
What is 3 angles
100

The postulate/shortcut you can use when 3 sides are congruent.

What is SSS

100
It states that the sum of the squares of the legs of a right triangle equals the square of the hypotenuse of a right triangle.
What is the Pythagorean Theorem?
100

If a vertex angle in an isosceles triangle is 100 degrees then each base angle must be how many degrees?

What is 40 degrees.

200

At least two equal sides and angles

What is Isosceles

200
The value of all three angles in a triangle added together.
What is 180 degrees
200
If two sides and the included angle of one triangle are congruent to two sides and the included angle of another triangle, then these two triangles are congruent.
What is SAS
200

The relationship between the two acute angles in a right triangle.

What is complementary.

200

The measure of each angle in an equilateral triangle.

What is 60 degrees

300
All sides and angles are equal.
What is Equilateral
300
When two lines intersect the opposite angles are equal to each other.
What is vertical angles
300
If two angles and the included side of one triangle are congruent to two angles and the included side of another triangle, then these two triangles are congruent.
What is ASA
300

What we call the two sides of a right triangle, that are not the hypotenuse.

What are the legs

300

The base angle measures in an isosceles right triangle.

What is 45 degrees.

400
Has an angle whose measurement is greater then 90 degrees.
What is Obtuse
400
The little box in the corner of a triangle.
What is 90 degrees.
400
If two angles and the non-included side one triangle are congruent to two angles and the non-included angle of another triangle, then these two triangles are congruent.
What is AAS
400

The shortcut to prove congruence that only works with right triangles.

What is Hypotenuse-Leg Theorem

400
The non congruent side of an isosceles triangle.
What is a base
500
All angles measure less then 90 degrees.
What is acute.
500
An exterior angle of a triangle is equal to the sum of the opposite interior angles.
What is Exterior Angle Theorem
500

This shortcut does not work because you can actually create different triangles when given just this information.

What is SSA

500
Besides one angle you need this number of sides to prove a right triangle congruent?
What is two.
500
The point where two congruent legs come together.
What is Vertex Angle
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