Angles - Term 1 Flashcards
What is the rule for angles on a straight line?
Angles on a straight line add up to 180*
What is the rule for angle around a point?
Angles around a point add up to 360*
What is the rule for vertically opposite angles?
Vertically opposite angles are equal
What is the rule for angles on a triangle?
Angles on a triangle add up to 180*
What is the rule about isosceles triangles
An isosceles triangle has two equal sides (lengths) and two equal base angles
What is the rule for angles on a quadrilateral?
Angles on a quadrilateral add up to 360*
What’s the rule for quadrilaterals to do with triangles?
All quadrilaterals can be split int two to make two triangles
What are co-interior angles in relationship to each other?
Co interior angles add up to 180*
What does it mean for a shape to be regular?
All sides are the same shape and all angles are the same size
How many sides does a pentagon have?
5
How many sides does a hexagon have?
6
How many sides does a heptagon have?
7
How many sides does a octagon have?
8
How many sides does a nonagon have?
9
How many sides does a decagon have?
10
What do an interior angle and an exterior angle add up to?
180*
What do the exterior angles of a polygon add up to?
360*
A 91 degree angle is an example of a / an _________ angle?
An Obtuse Angle
An obtuse angle is an angle of size between 90 and 180 degrees
Explain two differences between a scalene and an isosceles triangle?
A scalene triangle shown has 3 sides of different lengths and 3 angles of different size
The isosceles triangle shown has two equal sides and two equal angles.
Use each word from below ONCE to complete what follows:-
Quadrilateral Four sides. Rectangle Square. Flat
A ________ is an example of a ________ shape because it has no thickness.
It is also grouped as a __________ because it has _______________.
Another shape in this group, the ___________.has two longer and two shorter pairs of dimensions.
A square is an example of a flat shape because it has no thickness.
It is also grouped as a quadrilateral because it has four sides.
Another shape in this group, the rectangle, has two longer and two shorter pairs of dimensions.