Angle and Triangle Self Check
Now, you try. Complete the self-check activity by looking at the questions below, working them out, and then clicking on the question to review the solution.
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Which angles in the image below are congruent? How do you know? Angles 1 and 3 and angles 2 and 4 are congruent. They are vertical angles. |
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Is
![]() ![]() Yes, they are similar triangles. They have two angles of the same measure, but are not the same size. |
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Using the diagram below, name an acute, an obtuse, a right, and a straight angle.
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Are the triangles below congruent? Why?
Yes, by the theorem side-angle-side they can be proven congruent.
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