Concepts of Geometry - Basic Construction and Vocabulary

What type of angle is shown?

• acute
• obtuse
• right
• straight

By using a compass, D and G were marked equidistant from Vertex E. The compass was then used to locate point F, distant from E, so that F is equidistant from D and G. For all constructions defined by the above steps, the measures of DEF and GEF

• are equal

• are NOT equal

• sum to 45°

• sum to 30°

What does the word BISECT mean?

• To cut something into more than five pieces.
• It is a plane with two sets of wings.
• A shape that has three sides. 
• To cut something into two congruent pieces or in half.

What do you call two angles whose sum is 180 degrees? 

• Vertical Angles
• Supplementary Angles
• Complementary Angles
• Adjacent Angles

If angle DCA is 125 degrees, what is the measure of angle DCB?

• 50 degrees

• 60 degrees

• 55 degrees

• 65 degrees

What is this?

• ruler

• compass

• protractor

• straightedge

Select the best answer choice.

• A
• B
• C
• D

Suppose we wish to construct angle EFG congruent to angle DBC using a compass and straightedge. Which step would be correct to do first?

• Place the compass point at B
• Place the compass point at C
• Place the straightedge along A and C
• Place the straightedge along C and D

A location in space that is represented by a dot and has no dimensions

• Point
• Line
• Plane
• Angle

Two lines that intersect to form right angle.

• Parallel Lines

• Perpendicular Lines

• Congruent Segments

• Parallel Planes