1/12 Check for Understanding

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°

Tags

CCSS.HSG.CO.C.9

Which of the following constructions is illustrated?

• An angle is congruent to a given angle

• The bisector of a given angle

• The bisector of a given segment

• The perpendicular bisector of a given segment.

Tags

CCSS.HSG.CO.C.9

Take a guess! Which one is the correct construction for a perpendicular bisector?

• 1
• 2
• 3
• 4

Name the construction.

• Angle bisector
• Di-sect an angle
• Copy an angle
• Vertical angles

Tags

CCSS.HSG.CO.D.12

What was duplicated?

• line
• line segment
• ray
• angle

Tags

CCSS.4.G.A.1

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.

Tags

CCSS.1.G.A.3

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

Tags

CCSS.4.MD.C.6

When bisecting an angle, the straightedge should be used to:

• Mark the point M
• Measure the angle AOB
• Copy the angle with an arc
• Connect point M and vertex O

Tags

CCSS.HSG.CO.C.9

Given: angle A
What is the first step in constructing the angle bisector of angle A?

• Draw ray AD
• Draw a line segment connecting points B and C.
• From points B and C, draw equal arcs that intersect at D.
• From point A, draw an arc that intersects the sides of theangle at points B and C.

Tags

CCSS.HSG.CO.C.9

Line segment AB is shown in the diagram. Which two sets of construction marks, labeled I, II , III, and IV,are part of the construction of the perpendicular bisector of line segment AB?

• I and II
• I and III
• II and III
• II and IV

Tags

CCSS.HSG.CO.C.9