Let’s go through each term one by one and match it with the correct definition and picture.
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1. Acute angle
Definition: An angle that measures less than 90 degrees.
Picture: The first picture shows a small, narrow angle — definitely less than 90°. ✔️
2. Obtuse angle
Definition: An angle that measures more than 90° but less than 180°.
Picture: The second picture shows an angle wider than a right angle but not straight — fits! ✔️
3. Right angle
Definition: A 90-degree angle.
Picture: The third picture has the little square corner symbol — that means exactly 90°. ✔️
4. Straight angle
Definition: A 180° angle (looks like a straight line).
Picture: The fourth picture is a straight horizontal line with arrows on both ends — perfect for 180°. ✔️
5. Vertical angles
Definition: Opposite angles formed when two lines intersect; they are equal.
Picture: The fifth picture shows two crossing lines forming X-shape angles — those are vertical angles. ✔️
6. Oblique triangle
Definition: A triangle with no right angle (all angles are either acute or obtuse, but none = 90°).
Picture: The sixth picture is a slanted triangle — no right angle marked, so it’s oblique. ✔️
7. Any quadrilateral
Definition: A four-sided polygon (any shape with 4 sides).
Picture: The seventh picture is a 4-sided figure that’s not regular — still a quadrilateral. ✔️
8. Any polygon
Definition: A closed figure with straight sides and angles (can be any number of sides ≥ 3).
Picture: The eighth picture is a hexagon (6 sides) — yes, that’s a polygon. ✔️
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All definitions and pictures already match correctly in the table as shown. No changes needed.
Final Answer:
The table is already correctly matched. Each term pairs with its accurate definition and corresponding picture.
Parent Tip: Review the logic above to help your child master the concept of simple geometry worksheet.
