___________
Maths
Geometrical properties: polygons
Starter quiz
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Give to class
A
______
is a flat (2D), closed figure made up of straight line segments.
'polygon' ✓
What is the size of ∠BCD?
73° ✓
84°
95°
108°
A hendecagon has 11 sides. The minimum number of triangles that it could be split into is
______
.
'9' ✓
A hexadecagon has 16 sides. Which calculation would find the sum of its interior angles?
14 \times 180
✓
14 \times 360
16 \times 180
16 \times 360
Angles around a point sum to
______
°.
'360' ✓
Evaluate the expression
20(x − 2)
when
x=5
.
'60' ✓
+