Straight Line Angles
Triangles
Quadrilaterals
Angles in a Trapezium
Co-Interior, Alternate, Corresponding and Vertically Opposite
100

What is the missing number on a straight line if I have an angle equalling 90°?

90°

100

This triangle has a 90° angle in it.

Right Angle Triangle

100

This shape has four equal sides and angles.

Square

100

Two angles of the trapezium are 90° and the third is 80°, how many degrees is the last angle?

360-90-90=360-180=180

180-80=100°

100

Which of the four angles can be spotted by drawing a C shape?

Co-interior angles
200

What is the missing number on a straight line if I have an angle equalling 45°?

135°

200

Each angle in this triangle is equal.

Equilateral

200

This shape is often used when flying a piece of material connected by string to a reel.

Kite

200

Two angles of the trapezium are 90° and the third is 30°, how many degrees is the last angle?

360-90-90=360-180=180

180-30=150°

200

When two lines met creating a central point, what angles are on opposite sides of the intersecting lines?

Vertically Opposite Angles

300

What is the missing number on a straight line if I have an angle equalling 168°?

12°

300

This equals up to 180°.

Triangles

300

This shape has two pairs of parallel lines, equal sides and one pair of obtuse angles and one pair of acute angles.

Rhombus

300

Two angles of the trapezium are 90° and the third is 120°, how many degrees is the last angle?

360-90-90=360-180=180

180-120=60°

300

What angle occurs between two parallel lines on the same side of the transversal line?

Co-interior angles

400

What is the missing number on a straight line if I have an angle equalling 67°?

113°

400

Each side of this triangle is different.

Scalene

400

This shape has two pairs of parallel lines and one pair of obtuse angles and one pair of acute angles.

Parallel

400

A trapezium has three angles of 190°, 70° and 60°. How many degrees is the last angle?

360-190-70-60=40°

400

Which angles are formed on the same side of the transversal line but are located on opposite parallel lines?

Corresponding

500

What is the missing number on a straight line if I have an angle equalling 96°?

84°

500

Two angles of this triangle are 70°.

Isosceles 

500

This shape has one pair of parallel sides.

Trapezium

500

A trapezium has three angles of 168°, 23° and 52°. How many degrees is the last angle?

360-168-23-52=117°

500

Which angle is on the opposite sides of the transversal line but are equal in the amount of degrees?

Alternate