To solve this problem, we need to look at the angles in each triangle. Here is a quick guide based on the definitions provided in the worksheet:
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Acute Triangle: All three angles are sharp (less than 90°). It looks like a regular, pointy triangle.
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Right Triangle: Has one square corner (exactly 90°). It looks like the corner of a piece of paper or a box.
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Obtuse Triangle: Has one wide angle (greater than 90°). One of the corners looks "open" or wide.
Let's look at each shape:
a. This triangle has one very wide angle at the top right. Because one angle is wider than a square corner, it is an
obtuse triangle.
b. All three corners look sharp and narrow. None of them are wide, and none form a perfect square corner. Therefore, it is an
acute triangle.
c. The bottom-left corner forms a perfect "L" shape or square corner. This means it is a
right triangle.
d. Similar to shape 'b', all three corners are sharp points. There are no wide angles or square corners. It is an
acute triangle.
e. The top angle is very wide and open. Since it is wider than a square corner, it is an
obtuse triangle.
f. The bottom-right corner forms a perfect square corner. It is a
right triangle.
Final Answer:
a. obtuse
b. acute
c. right
d. acute
e. obtuse
f. right
Parent Tip: Review the logic above to help your child master the concept of measuring triangles worksheet.
