# 1.7: Chapter 1 Review

Difficulty Level: At Grade Created by: CK-12

## Symbol Toolbox

\begin{align*}\overleftrightarrow{AB}, \overrightarrow{AB}, \overline{AB}\end{align*} - Line, ray, line segment

\begin{align*}\angle ABC\end{align*} - Angle with vertex \begin{align*}B\end{align*}

\begin{align*}m \overline{AB}\end{align*} or \begin{align*}AB\end{align*} - Distance between \begin{align*}A\end{align*} and \begin{align*}B\end{align*}

\begin{align*}m\angle ABC\end{align*} - Measure of \begin{align*}\angle ABC\end{align*}

\begin{align*}\perp\end{align*} - Perpendicular

= - Equal

\begin{align*}\cong\end{align*} - Congruent

Markings

## Keywords, Postulates, and Theorems

Points, Lines, and Planes

• Geometry
• Point
• Line
• Plane
• Space
• Collinear
• Coplanar
• Endpoint
• Line Segment
• Ray
• Intersection
• Postulates
• Theorem
• Postulate 1-1
• Postulate 1-2
• Postulate 1-3
• Postulate 1-4
• Postulate 1-5

Segments and Distance

• Distance
• Measure
• Ruler Postulate

Angles and Measurement

• Angle
• Vertex
• Sides
• Protractor Postulate
• Straight Angle
• Right Angle
• Acute Angles
• Obtuse Angles
• Convex
• Concave
• Polygon
• Perpendicular
• Construction
• Compass

Midpoints and Bisectors

• Congruent
• Midpoint.
• Midpoint Postulate
• Segment Bisector
• Perpendicular Bisector
• Perpendicular Bisector Postulate
• Angle Bisector
• Angle Bisector Postulate

Angle Pairs

• Complementary
• Supplementary
• Linear Pair
• Linear Pair Postulate
• Vertical Angles
• Vertical Angles Theorem

Classifying Polygons

• Triangle
• Right Triangle
• Obtuse Triangle
• Acute Triangle
• Equiangular Triangle
• Scalene Triangle
• Isosceles Triangle
• Equilateral Triangle
• Vertices
• Diagonals

## Review

Match the definition or description with the correct word.

1. When three points lie on the same line. — A. Measure
2. All vertical angles are ________. — B. Congruent
3. Linear pairs add up to _______. — C. Angle Bisector
4. The \begin{align*}m\end{align*} in from of \begin{align*}m\angle ABC\end{align*}. — D. Ray
5. What you use to measure an angle. — E. Collinear
6. When two sides of a triangle are congruent. — F. Perpendicular
7. \begin{align*}\perp\end{align*} — G. Line
8. A line that passes through the midpoint of another line. — H. Protractor
9. An angle that is greater than \begin{align*}90^\circ\end{align*}. — I. Segment Addition Postulate
10. The intersection of two planes is a ___________. — J. Obtuse
11. \begin{align*}AB + BC = AC\end{align*} — K. Point
12. An exact location in space. — L. \begin{align*}180^\circ\end{align*}
13. A sunbeam, for example. — M. Isosceles
14. Every angle has exactly one. — N. Pentagon
15. A closed figure with 5 sides. — O. Hexagon

P. Bisector

## Texas Instruments Resources

In the CK-12 Texas Instruments Geometry FlexBook, there are graphing calculator activities designed to supplement the objectives for some of the lessons in this chapter. See http://www.ck12.org/flexr/chapter/9686.

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