Geometry Terms Notes and Worksheets - Lindsay Bowden - Free Printable

Part A: Name each figure in one way. Make sure to use correct symbols!

#### 1.
The figure shows a line segment with arrows on both ends, indicating it is a ray. The ray starts at point \( J \) and extends through points \( K \) and \( L \).

- Answer: \( \overrightarrow{JK} \)

#### 2.
The figure shows a single point labeled \( C \).

- Answer: \( C \)

#### 3.
The figure shows a line segment extending indefinitely in one direction, starting at point \( D \) and passing through point \( E \) and ending at point \( F \). This is a ray.

- Answer: \( \overrightarrow{DE} \) or \( \overrightarrow{DF} \)

#### 4.
The figure shows a quadrilateral with opposite sides parallel and marked as equal in length. This is a parallelogram.

- Answer: \( \parallelogram FGHW \)

#### 5.
The figure shows three collinear points \( P \), \( Q \), and \( R \). This represents a line segment or a line if extended indefinitely.

- Answer: \( \overleftrightarrow{PQ} \) or \( \overleftrightarrow{PR} \)

#### 6.
The figure shows a line segment with endpoints \( A \) and \( B \).

- Answer: \( \overline{AB} \)

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Part B: Use the vocabulary terms you have learned to answer each question.

#### 7. Name the angle in 3 ways.
The figure shows an angle formed by rays \( \overrightarrow{RT} \) and \( \overrightarrow{ST} \) with vertex \( T \). The angle can be named in three ways:
1. By its vertex: \( \angle T \)
2. By the three points, with the vertex in the middle: \( \angle RTS \)
3. By a number: \( \angle 5 \)

- Answer: \( \angle T \), \( \angle RTS \), \( \angle 5 \)

#### 8. Draw a pair of parallel lines. Name them \( \overrightarrow{EF} \) and \( \overrightarrow{GH} \).
To draw parallel lines:
1. Draw two straight lines that never intersect.
2. Label one line as \( \overrightarrow{EF} \).
3. Label the other line as \( \overrightarrow{GH} \).

- Answer: (Draw two parallel lines and label them accordingly.)

#### 9. Draw an angle. Label it \( \angle XYZ \).
To draw an angle:
1. Draw two rays originating from a common vertex.
2. Label the vertex as \( Y \).
3. Label the endpoints of the rays as \( X \) and \( Z \).
4. Label the angle as \( \angle XYZ \).

- Answer: (Draw an angle and label it \( \angle XYZ \).)

#### 10. Draw a pair of perpendicular lines that intersect at point \( L \).
To draw perpendicular lines:
1. Draw two lines that intersect at a right angle (90 degrees).
2. Label the intersection point as \( L \).

- Answer: (Draw two perpendicular lines and label their intersection as \( L \).)

#### 11. Name the angle in 3 ways.
The figure shows an angle formed by rays \( \overrightarrow{CD} \) and \( \overrightarrow{CE} \) with vertex \( C \). The angle can be named in three ways:
1. By its vertex: \( \angle C \)
2. By the three points, with the vertex in the middle: \( \angle DCE \)
3. By a number: \( \angle 2 \)

- Answer: \( \angle C \), \( \angle DCE \), \( \angle 2 \)

#### 12. Name the angle in 3 ways.
The figure shows an angle formed by rays \( \overrightarrow{BC} \) and \( \overrightarrow{BA} \) with vertex \( B \). The angle can be named in three ways:
1. By its vertex: \( \angle B \)
2. By the three points, with the vertex in the middle: \( \angle ABC \)
3. By a number: \( \angle 6 \)

- Answer: \( \angle B \), \( \angle ABC \), \( \angle 6 \)

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Final Answers:

\[
\boxed{
\begin{array}{ll}
\text{1.} & \overrightarrow{JK} \\
\text{2.} & C \\
\text{3.} & \overrightarrow{DE} \text{ or } \overrightarrow{DF} \\
\text{4.} & \parallelogram FGHW \\
\text{5.} & \overleftrightarrow{PQ} \text{ or } \overleftrightarrow{PR} \\
\text{6.} & \overline{AB} \\
\text{7.} & \angle T, \angle RTS, \angle 5 \\
\text{8.} & \text{(Draw parallel lines labeled } \overrightarrow{EF} \text{ and } \overrightarrow{GH}\text{)} \\
\text{9.} & \text{(Draw an angle labeled } \angle XYZ\text{)} \\
\text{10.} & \text{(Draw perpendicular lines intersecting at } L\text{)} \\
\text{11.} & \angle C, \angle DCE, \angle 2 \\
\text{12.} & \angle B, \angle ABC, \angle 6 \\
\end{array}
}
\]