Circles Flashcard

Circles Flashcard

Assessment

Flashcard

Mathematics

9th Grade

Practice Problem

Hard

Created by

Wayground Content

FREE Resource

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15 questions

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1.

FLASHCARD QUESTION

Front

What is a circle?

Back

A circle is a shape consisting of all points in a plane that are at a given distance (radius) from a fixed point (center).

2.

FLASHCARD QUESTION

Front

What is the formula for the circumference of a circle?

Back

The circumference (C) of a circle is given by the formula: C = 2πr, where r is the radius.

3.

FLASHCARD QUESTION

Front

What is the formula for the area of a circle?

Back

The area (A) of a circle is given by the formula: A = πr², where r is the radius.

4.

FLASHCARD QUESTION

Front

What is a sector of a circle?

Back

A sector is a portion of a circle enclosed by two radii and the arc between them.

5.

FLASHCARD QUESTION

Front

How do you calculate the area of a sector?

Back

The area of a sector can be calculated using the formula: Area = (θ/360) * πr², where θ is the angle in degrees and r is the radius.

6.

FLASHCARD QUESTION

Front

What is the relationship between degrees and radians?

Back

Degrees and radians are two units for measuring angles. 180 degrees is equal to π radians.

7.

FLASHCARD QUESTION

Front

What is the measure of a full circle in degrees?

Back

A full circle measures 360 degrees.

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