Course 1 Chapter 9
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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straight angle | An angle whose measure is exactly 180 degrees.
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obtuse angle | An angle whose measure is > 90 and <180 degrees.
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right angle | An angle whose measure is exactly 90 degrees.
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acute angle | An angle whose measure is < 90 degrees.
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supplementary angle | Two angles are supplementary if the sum of their measures is 180 degrees.
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corresponding angel | Angles that occupy corresponding positions When a line intersects two other lines. When a line intersects two parallel lines, corresponding angles are congruent.
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complementary angle | Two angles are complementary if the sum of their measures is 90 degrees.
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congruent angles | Angles of the same measure.
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verticle angles | When two lines meet at a point,the opposite angles.
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adjacent angles | Two angles on a flat surface that share a common side and a vertex and do not overlap.
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plane | A flat surface that extends without end.
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acute triangle | A triangle with 3 acute angles.
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right triangle | A triangle with a 90 degree angle.
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obtuse triangle | A triangle with an obtuse angle.
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trapezoid | A quadrilateral with exactly 1 pair of parellel sides.
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parallelogram | A quadrilateral with 2 pairs of parallel sides.
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rectangle | A parallelogram with 4 right angles.
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square | A parallelogram with 4 right angles and 4 congruent sides.
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rhombus | A parallelogram with 4 congruent sides.
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isosceles triangle | A triangle with two congruent sides
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equilateral triangle | A triangle with three congruent sides.
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scalene triangle | A triangle with no congruent sides
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diagonal line | A segment, other than a siide, that connects two vertices of a polygon.
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perpendicular lines | Lines which meet to form four right(90 degree) angles
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intersecting lines | Two lines that meet at a point.
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parallel lines | Two lines which never intersect
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hexagon | A polygon with six sides
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pentagon | A polygon with five sides
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octagon | A polygon with eight 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.
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.
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:
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