Geometry Flashcard Area/Angle Pairs/Triangle Sum

Front

What is the sum of the interior angles of a triangle?

Back

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

Front

Define supplementary angles.

Back

Supplementary angles are two angles that add up to 180°.

Front

What is the formula for the area of a triangle?

Back

The area of a triangle is given by the formula: Area = 1/2 * base * height.

Front

What are vertical angles?

Back

Vertical angles are the angles opposite each other when two lines intersect. They are always equal.

Front

What is a linear pair of angles?

Back

A linear pair of angles are two adjacent angles that form a straight line and add up to 180°.

Front

If one angle measures 70°, what is the measure of its supplementary angle?

Back

The supplementary angle measures 110° (180° - 70°).

Front

What is the relationship between complementary angles?

Back

Complementary angles are two angles that add up to 90°.

Front

How do you find the area of a circle?

Back

The area of a circle is calculated using the formula: Area = π * r², where r is the radius.

Front

What is the value of x if the angles are supplementary and one angle is 37°?

Back

x = 143° (180° - 37°).

Front

What is the definition of adjacent angles?

Back

Adjacent angles are two angles that share a common side and a common vertex.