10th grade Geometry
Quiz yourself by thinking what should be in
each of the black spaces below before clicking
on it to display the answer.
Help!
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| point | specific location
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| line | goes on forever in both directions and has at least 2 points
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| plane | 2 dimensions
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| collinear points | points on the same line
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| coplanar points | points on the same plane
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| line segment | part of a line with 2 endpoints
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| endpoints | points at the end of a segment or start of a ray
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| ray | goes on forever in 1 direction
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| opposite rays | 2 rays that share the same endpoint and go in opposite directions
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| intersection | the place where 2 things meet
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| postulate/axium | a rule that is accepted without proof
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| theorem | a rule that can be proved
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| midpoint | a point in the middle of a segment
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| segment bisector | a line/ray that divides a segment into 2 congruent parts
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| angle | 2 rays with a common endpoint
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| vertex | a common endpoint in an angle
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| acute angle | an angle that measures less than 90 degrees
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| right angle | an angle that measures exactly 90 degrees
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| obtuse angle | an angle that measures between 90 and 180 degrees
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| straight angle | an angle that measures exactly 180 degrees
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| angle bisector | a ray that divides an angle into 2 congruent angles
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| complementary angles | 2 angles that add to 90 degrees
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| supplementary angles | 2 angles that add to 180 degrees
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| adjacent angles | 2 angles that share a common side
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| linear pair | 2 adjacent angles that add to 180 degrees
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| vertical angles | angles opposite from each other that are congruent
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| polygon | a closed plane figure with 3 or more side and separate vertices
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| convex | does not cave in
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| concave | caves in
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| equilateral polygon | a polygon with a congruent sides
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| equilangular polygon | a polygon with all interior angles congruent
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| regular polygon | both equilateral and equilangular
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| conjecture | something unproven based on observations
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| inductive reasoning | conjectures based on patterns and observations
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| counter example | proves a conjecture wrong
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| conditional statement | an if, then statement
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| hypothesis | the "if" part of a conditional statement
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| conclusion | the "then" part of a conditional statement
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| negation | the opposite of the original statement
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| inverse | if not p then not q
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| deductive reasoning | conjectures based on facts, definitions, properties, and laws of logic
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| law of sylogism | if p, then q. If q, then r. If p, then r.
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| parallel lines | 2 coplanar lines that never intersect
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| perpendicular | 2 lines that cross at 90 degree angle
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| transversal | a line that intersects 2 or more lines at different points
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| consecutive interior | inside the 2 lines on the same side
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| converse | switches the hypothesis and conclusion: if q then p
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| biconditional | uses the phrase "if and only if"
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| contrapositive | if not q then not p
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| law of detachment | gives you a true statement and an additional statement to form a conclusion
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| skew lines | 2 non-coplanar lines that never intersect
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| corresponding | angles in the same position on different lines. The angles are congruent.
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| alternate interior | inside the 2 lines on opposite sides
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| alternate exterior | outside the 2 lines on opposite sides
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Review the information in the table. When you are ready to quiz yourself you can hide individual columns or the entire table. Then you can click on the empty cells to reveal the answer. Try to recall what will be displayed before clicking the empty cell.
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Or sort by any of the columns using the down arrow next to any column heading.
If you know all the data on any row, you can temporarily remove it by tapping the trash can to the right of the row.
To hide a column, click on the column name.
To hide the entire table, click on the "Hide All" button.
You may also shuffle the rows of the table by clicking on the "Shuffle" button.
Or sort by any of the columns using the down arrow next to any column heading.
If you know all the data on any row, you can temporarily remove it by tapping the trash can to the right of the row.
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Created by:
tcox2
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