GRADE 7 ACTIVITY
CONSTRUCTING PERPENDICULAR LINES
TASK 1: Constructing a line perpendicular to a given line at a point on the line.
Procedures:
STEP 1: Construct a line ⊥ to line 𝑚 that passes A.
STEP 2: Place the compass point at A and adjust the
compass opening.
STEP 3: Draw two arcs intersecting across the line
creating points B and C.
STEP 4: From each point B and C, draw arcs above
intersecting at D.
STEP 5: Draw the line from A to D.
Draw the figure.
Complete the statement.
1. ______ ⊥ ⃡𝐵𝐶 𝑎𝑡 𝐴
TASK 2: Constructing a line perpendicular to a given line at a point on the line.
Procedures:
STEP 1: Construct a line ⊥ to line 𝑛 that passes at
point X.
STEP 2: With the compass point at X, set it to a
medium compass opening.
STEP 3: Draw an arc on each side of X using the
compass intersecting to create points Y and Z.
STEP 4: With the compass point on X and with an
opening more than YX, draw an arc on one
side of the line.
STEP 5: Without changing the compass opening repeat
the process from point Z, creating point W.
STEP 6: Draw the line from X to W.
Complete the statement.
1. ________ ⊥ ⃡𝑌𝑍
Draw the figure.