5.1 Angles of Triangles

Front

What is an acute triangle?

Back

A triangle where all three angles are less than 90 degrees.

Front

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

Back

Subtract the sum of the known angles from 180 degrees.

Front

If one angle of a triangle is 79 degrees and another is 43 degrees, how do you find the third angle?

Back

Use the formula: Third angle = 180 - (79 + 43).

Front

What is the equation to find x if the angles in a triangle are expressed as 42 + 8x and 2 + 12x?

Back

Set up the equation: 42 + 8x = 2 + 12x.

Front

What is a right triangle?

Back

A triangle that has one angle measuring exactly 90 degrees.

Front

What is the sum of the angles in any triangle?

Back

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

Front

How can you classify a triangle based on its angles?

Back

Triangles can be classified as acute, right, or obtuse based on their angles.

Front

What is an obtuse triangle?

Back

A triangle where one angle is greater than 90 degrees.

Front

What is the relationship between the angles in a triangle?

Back

The sum of the three interior angles must equal 180 degrees.

Front

How do you classify a triangle based on its sides?

Back

Triangles can be classified as equilateral, isosceles, or scalene based on the lengths of their sides.