Unit 5 Flashcard 1: Lessons 1-3

Front

What is the value of x if x = 45?

Back

x = 45

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

What is the value of y if y = 110?

Back

y = 110

Front

How do you find the missing angle in a trapezoid?

Back

To find the missing angle in a trapezoid, use the property that the sum of the interior angles of a trapezoid is 360 degrees.

Front

What is a kite in geometry?

Back

A kite is a quadrilateral with two pairs of consecutive congruent sides.

Front

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

Back

The sum of the interior angles of a quadrilateral is 360 degrees.

Front

What is the definition of a trapezoid?

Back

A trapezoid is a four-sided figure (quadrilateral) with at least one pair of parallel sides.

Front

How do you calculate the area of a trapezoid?

Back

Area = 1/2 * (base1 + base2) * 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

What is the formula for the sum of the interior angles of a polygon?

Back

Sum = (n - 2) * 180 degrees, where n is the number of sides.