Discovering Geometry An Investigative Approach
... b. Write a conjecture describing what you observe about alternate exterior angles (AEA Conjecture). 5. Combine the three conjectures you made in Questions 2–4 into a single ...
... b. Write a conjecture describing what you observe about alternate exterior angles (AEA Conjecture). 5. Combine the three conjectures you made in Questions 2–4 into a single ...
Exploring triangles
... Why or why not? Look at the flow diagram on the previous page. With the downward flow of the arrows, the quadrilaterals become more specialised. If two quadrilaterals in the diagram are linked by one or more arrows, the quadrilateral below is a special type of the one above it eg. an isosceles trape ...
... Why or why not? Look at the flow diagram on the previous page. With the downward flow of the arrows, the quadrilaterals become more specialised. If two quadrilaterals in the diagram are linked by one or more arrows, the quadrilateral below is a special type of the one above it eg. an isosceles trape ...
Notes on Greek Mathematics
... POSTULATE 5: If a straight line falling on two straight lines makes interior angles on the same side adding up to less than two right angles, the two straight lines, if produced indefinitely, will meet on that side of the intersecting line. This sounds more like a theorem than an axiom, and indeed o ...
... POSTULATE 5: If a straight line falling on two straight lines makes interior angles on the same side adding up to less than two right angles, the two straight lines, if produced indefinitely, will meet on that side of the intersecting line. This sounds more like a theorem than an axiom, and indeed o ...
Parallelogram - Del Mar College
... In The Geometer’s Sketchpad, there is an important distinction that must be made when removing objects from the diagram. Deleting an object permanently removes it and any objects created via it, called its “children”, from the sketch. This can have disastrous and unintended consequences. Most o ...
... In The Geometer’s Sketchpad, there is an important distinction that must be made when removing objects from the diagram. Deleting an object permanently removes it and any objects created via it, called its “children”, from the sketch. This can have disastrous and unintended consequences. Most o ...
Topic 6: Parallel and Perpendicular
... transversal intersecting parallel lines. If they are formed by a transversal intersecting non-parallel lines, then the corresponding angles are not cougruent. Vertical angles are always congruent. Students use these facts to identify pairs of congruent angles. Before students begin to solve the exer ...
... transversal intersecting parallel lines. If they are formed by a transversal intersecting non-parallel lines, then the corresponding angles are not cougruent. Vertical angles are always congruent. Students use these facts to identify pairs of congruent angles. Before students begin to solve the exer ...
