Geometry Chapter 1 Flashcard Review

Front

Classify the polygon by the number of sides, whether it is convex or concave, regular or irregular. Example: Pentagon, Concave, Irregular

Back

A polygon with 5 sides is called a pentagon. If it has angles that point inward, it is concave. If all sides and angles are equal, it is regular.

Front

What is a line?

Back

A line is a straight set of points that goes on forever in both directions.

Front

Find the area of the triangle, to the nearest tenth. Example: Area = 20

Back

The area of a triangle can be calculated using the formula: Area = 1/2 * base * height.

Front

What is the value of x in the equation x + 2 = 7?

Back

x = 5

Front

Find the perimeter of the triangle, to the nearest tenth. Example: Perimeter = 22.6

Back

The perimeter of a triangle is the sum of the lengths of its sides.

Front

Define a convex polygon.

Back

A convex polygon is a polygon where all interior angles are less than 180 degrees, and no vertices point inward.

Front

Define a concave polygon.

Back

A concave polygon is a polygon that has at least one interior angle greater than 180 degrees, causing at least one vertex to point inward.

Front

What is the formula for the area of a triangle?

Back

Area = 1/2 * base * height.

Front

What is the difference between a regular and irregular polygon?

Back

A regular polygon has all sides and angles equal, while an irregular polygon does not.

Front

How do you calculate the perimeter of a polygon?

Back

The perimeter of a polygon is calculated by adding the lengths of all its sides.