In these lessons, we will learn
More Geometry Lessons
Construct a parallelogram ABCD with sides AB = 4 cm and AD = 5 cm and angle A = 60˚.
Step 1: Construct a line segment AB = 4 cm. Construct a 60˚ angle at point A.
Step 3: Stretch your compasses to 4 cm, place the sharp end at D and draw an arc to intersect the arc drawn in step 2. Label the intersecting point C. Join C to D and B to C to form the parallelogram ABCD.
How to construct a parallelogram with a given angle and certain side lengths?
Construct a parallelogram with side lengths c and d and with a 45° angle.
How to construct a parallelogram, using two lengths and one angle provided?
Step 1: Make a copy of the given angle.
Step 2: Make a copy of the lengths for each side.
Step 3: Use the compass to mark the fourth vertex.
This video shows how to construct a parallelogram given the lengths of its diagonals, using the property that diagonals of a parallelogram bisect each other. An infinite number of parallelograms are possible.
Construct a parallelogram ABCD given the diagonals AC and BD.
Step 1: Bisect AC and BD.
Step 2: Draw a circle with the radius equals to 1/2 of AC.
Step 3: Draw a concentric circle with the radius equals to 1/2 of BD.
Step 4: Mark two points that will form the diameter on the bigger circle.
Step 5: Mark two points that will form the diameter on the smaller circle.
Step 6: Join the four points to form the parallelogram.
How to construct a parallelogram using the intersecting diagonals property of a parallelogram?
The diagonals of a parallelogram bisect each other.
The following video shows how to construct a square with a compass and straight edge given the length of a diagonal.
How to construct a square using a diagonal?
The following video shows how to construct a square given the length of one side.
How to construct a square given the length of one side? Two methods are shown.
How to draw a Rectangle Using a Compass and Straight Edge, and perpendicular bisector constructions.
Construct a rectangle with compass and straight edge.
Step 1: Construct two perpendicular segments.
Step 2: Mark off congruent sides.
Step 3: Check for 4 right right angles.
Step 4: Check that the diagonals are equal in lengths.
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