Angles, Triangles
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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| ray | shared by adjacent angles
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| sum | the answer to an addition problem
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| intersecting lines | lines that cross at a point
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| vertical angles | angles which are formed by intersecting lines and have equal measures
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| adjacent angles | angles that are next to each other
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| supplementary angles | angles whose measures have a sum of 180 degrees
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| complementary angles | angles whose measures have a sum of 90 degrees
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| acute angle | has a measure less than 90 degrees
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| obtuse angle | has a measure more than 90 degrees, but less than 180 degrees
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| right angle | has a measure of exactly 90 degrees
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| acute triangle | a three sided shape with all angles measuring less than 90 degrees
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| right triangle | a three sided shape with one angle measuring exactly 90 degrees
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| obtuse triangle | a three sided shape with one angle measuring greater than 90 degrees
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| isosceles triangle | a three sided shape with two congruent sides
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| equilateral triangle | a three sided shape with all congruent sides
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| scalene triangle | a three sided shape with all sides measuring different lengths
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| triangle inequality theorem | Helps us to know if three sides will form a triangle. The sum of the two smaller sides, must be greater than the largest side.
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| No, 2 + 5 needs to be greater than the third side. | Will sides of 2, 5, and 7 form a triangle?
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| No, 4 + 10 needs to be greater than the third side. | Will sides of 4, 15, and 10 form a triangle?
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| Yes, 4 + 5 is greater than the third side. | Will sides of 4, 5, and 6 form a triangle?
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| 2<x<10 | If two sides of a triangle are 6 and 4, give the range of values for the third side.
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| 180 degrees | What is the sum of all the measures of the angles of a triangle?
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| congruent | having exactly the same shape, size or measure
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| 5<x<11 | If two sides of a triangle are 8 and 3, give the range of values for the third side.
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| 15<x<55 | If two sides of a triangle are 20 and 35, give the range of values for the third side.
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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:
braggk
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