Fall Final Review--Chapter 4

Front

What is an acute angle?

Back

An acute angle is an angle that measures less than 90 degrees.

Front

What is the HL postulate in triangle congruence?

Back

The HL (Hypotenuse-Leg) postulate states that if the hypotenuse and one leg of a right triangle are congruent to the hypotenuse and one leg of another right triangle, then the two triangles are congruent.

Front

If \( \Delta JLK \cong \Delta ___ \), what is the missing triangle?

Back

The missing triangle is MNK.

Front

What is a scalene triangle?

Back

A scalene triangle is a triangle in which all three sides are of different lengths.

Front

If line segment RP is congruent to line segment ___, what is the missing segment?

Back

The missing segment is KL.

Front

What defines an isosceles triangle?

Back

An isosceles triangle is a triangle that has at least two sides of equal length.

Front

What is the definition of a right angle?

Back

A right angle is an angle that measures exactly 90 degrees.

Front

What is an obtuse angle?

Back

An obtuse angle is an angle that measures more than 90 degrees but less than 180 degrees.

Front

What is an equilateral triangle?

Back

An equilateral triangle is a triangle in which all three sides are of equal length and all angles are equal to 60 degrees.

Front

What does the SSS postulate state?

Back

The SSS (Side-Side-Side) postulate states that if three sides of one triangle are congruent to three sides of another triangle, then the two triangles are congruent.