___________
Maths
Geometrical properties: polygons
Starter quiz
Try it
Give to class
An
______
angle is an angle on the outside of a polygon between an extension of an edge and its adjacent edge.
acute
alternate
exterior ✓
interior
obtuse
Adjacent angles on a straight line sum to
______
°.
'180' ✓
The angle
x
° is
______
°.
'70' ✓
What is the size of ∠CDA?
73°
84°
95° ✓
108°
A heptagon is a 7-sided polygon. The sum of its interior angles is
______
°.
'900' ✓
Solve the equation:
5x + 40 = 360
.
x =
______
'64' ✓
+