Geometry - Lessons 4.1-4.4

Front

What is an Equilateral Triangle?

Back

A triangle with all three sides of equal length and all three angles measuring 60°.

Front

What is a Right Isosceles Triangle?

Back

A triangle with two sides of equal length and one angle measuring 90°.

Front

What is the Triangle Sum Theorem?

Back

The sum of the interior angles of a triangle is always 180°.

Front

How do you find the measure of an angle using the Triangle Sum Theorem?

Back

Subtract the sum of the known angles from 180°.

Front

What does SAS stand for in triangle congruence?

Back

Side-Angle-Side: Two sides and the included angle are congruent.

Front

What does SSS stand for in triangle congruence?

Back

Side-Side-Side: All three sides of one triangle are congruent to all three sides of another triangle.

Front

What does ASA stand for in triangle congruence?

Back

Angle-Side-Angle: Two angles and the included side are congruent.

Front

What does HL stand for in triangle congruence?

Back

Hypotenuse-Leg: In right triangles, the hypotenuse and one leg are congruent.

Front

How do you name a triangle congruent to triangle ABC?

Back

You can name it triangle FMN if the corresponding angles and sides match.

Front

How do you name a triangle congruent to triangle XYZ?

Back

You can name it triangle XWZ if the corresponding angles and sides match.