4.1 and 4.2 Flashcard Review

Front

What is a scalene triangle?

Back

A scalene triangle is a triangle that has no congruent sides.

Front

What is an isosceles triangle?

Back

An isosceles triangle is a triangle that has at least two congruent sides.

Front

What is an equilateral triangle?

Back

An equilateral triangle is a triangle where all three sides are congruent.

Front

What is the sum of the angles in a triangle?

Back

The sum of the angles in a triangle is always 180 degrees.

Front

If x + x + x = 180, what is the value of x?

Back

x = 60 degrees.

Front

What is the measure of each angle in an equilateral triangle?

Back

Each angle in an equilateral triangle measures 60 degrees.

Front

What is the measure of the angles in a right triangle?

Back

In a right triangle, one angle measures 90 degrees, and the sum of the other two angles is 90 degrees.

Front

How do you find the measure of an unknown angle in a triangle?

Back

Subtract the sum of the known angles from 180 degrees.

Front

What is a right triangle?

Back

A right triangle is a triangle that has one angle measuring 90 degrees.

Front

What is an obtuse triangle?

Back

An obtuse triangle is a triangle that has one angle measuring more than 90 degrees.