Friday Flashcard 16

Front

What is the center of a circle in coordinate geometry?

Back

The center of a circle is a point in the plane from which all points on the circle are equidistant. It is represented as (x, y) in coordinate geometry.

Front

How do you find the center of a circle given its equation?

Back

For a circle in the standard form (x - h)² + (y - k)² = r², the center is (h, k).

Front

What is the measure of a right angle?

Back

A right angle measures 90 degrees.

Front

What is the sum of angles in a triangle?

Back

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

Front

What is a trapezoid?

Back

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

Front

What does it mean for two shapes to be similar?

Back

Two shapes are similar if they have the same shape but not necessarily the same size; their corresponding angles are equal and their corresponding sides are in proportion.

Front

How do you determine corresponding points in similar figures?

Back

Corresponding points in similar figures are matched based on the order of the vertices and the angles of the shapes.

Front

What is the formula for the area of a trapezoid?

Back

The area A of a trapezoid is given by the formula A = (1/2) * (b1 + b2) * h, where b1 and b2 are the lengths of the two parallel sides and h is the height.

Front

What is the relationship between the angles in a right triangle?

Back

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

Front

How do you identify the coordinates of a point in a Cartesian plane?

Back

The coordinates of a point are given as (x, y), where x is the horizontal distance from the origin and y is the vertical distance from the origin.