Geometry-deck 1 Flashcards Preview

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Flashcards in Geometry-deck 1 Deck (17):
0

Define a right angle:

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A right angle is an angle of 90°.

1

Define a straight angle:

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A straight angle is an angle of 180°. It forms a straight line and is the double of a right angle.

2

Define an acute angle:

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An acute angle is an angle of under 180°.

3

Define an obtuse angle.

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An obtuse angle is an angle of above 180°.

4

123°

Obtuse angle

5

What does an angle of 360° make?

A full circle. It is the double of a straight angle and the quadruple of a right angle.

6

57°

Acute angle

7

360°

Full circle

8

90°

Right angle

9

180°

Straight angle

10

Define a square:

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A square is a geometrical figure with four sides of equal length and four angles of equal measure.

11

Define a side in a geometrical figure:

A side is (basically) one of the lines in the figure.

12

How many right angles does a square have?

4

13

Define a rectangle:

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A rectangle is a geometrical figure with two pairs of sides and angles of equal length and measure.

14

How many right angles are there in a rectangle?

4

15

Define a circle:

A circle is the collection of points that are at the same distance from another single point, called the origin(O).

16

How many angles of 360° are there in a circle?

1