TGT Angles

Hearts

 Q1. Geometry is based on work by… Euclid Pythagoras Archimedes Newton Q2. Which of these is correct notation for a ray? AB [AB] [AB |AB| Q3. If three points are on the same line, the points are said to be… Collinear Parallel Perpendicular None of these Q4. An angle between 90° and 180° is called… reflex acute obtuse right Q5. Two angles that add up to 180° are called… reflex alternate corresponding supplementary Q6. Angles are measured using a… Ruler Set-square Protractor Compass

In the following diagram,

 Q1. The ∠a and the ∠e are equal because they are… Corresponding Opposite c) Alternate d) Supplementary Q2.  The ∠c and the ∠e are equal because they are… Corresponding Opposite c) Alternate d) Supplementary Q3.  The ∠f and the ∠h are equal because they are… Corresponding Opposite c) Alternate d) Supplementary Q4.  The ∠g is not equal to which of these angles… ∠ e ∠a ∠c ∠f Q5.  Which of these are interior angles? ∠e & ∠f ∠e & ∠g ∠e & ∠d ∠e & ∠a Q6.   If ∠d is equal to 60°, then ∠a equals… 60° 180° 240° 120°

Diamonds

 Q1. Calculate the value of ∠a Q2. Calculate the value of ∠b Q3. Calculate the value of ∠c Q4. Calculate the value of ∠d Q5. Calculate the value of ∠e Q6. Explain why a triangle can never have a reflex angle.

Clubs

 Q1. What type of triangle is ∆ABD Scalene Right-angled c) Equilateral d) isosceles Q2.  What type of triangle is ∆BDC Scalene Right-angled c) Equilateral d) isosceles Q3. What is the measure of the angle ∠BCD Q4. Name another angle equal in measure to ∠BAD Q5. Calculate the size of the angle ∠ADB Q6.   Explain why ∠ADC is not a straight angle °?

 Answers Hearts Spades Diamonds Clubs 1 A 1 A 1 78° – Add to 180° 1 D 2 C 2 C 2 42° – alternate 2 C 3 A 3 B 3 60° – alternate 3 60° 4 C 4 D 4 102° – opposite angle 4 Abd 5 D 5 C 5 78° – opposite angle 5 124° 6 C 6 D 6 Reflex angle is greater than 180°, triangle can only be 180°. 6 124° + 60° = 184° straight angle must be 180°
 Answers Hearts Spades Diamonds Clubs 1 A 1 A 1 78° – Add to 180° 1 D 2 C 2 C 2 42° – alternate 2 C 3 A 3 B 3 60° – alternate 3 60° 4 C 4 D 4 102° – opposite angle 4 Abd 5 D 5 C 5 78° – opposite angle 5 124° 6 C 6 D 6 Reflex angle is greater than 180°, triangle can only be 180°. 6 124° + 60° = 184° straight angle must be 180°
 Answers Hearts Spades Diamonds Clubs 1 A 1 A 1 78° – Add to 180° 1 D 2 C 2 C 2 42° – alternate 2 C 3 A 3 B 3 60° – alternate 3 60° 4 C 4 D 4 102° – opposite angle 4 Abd 5 D 5 C 5 78° – opposite angle 5 124° 6 C 6 D 6 Reflex angle is greater than 180°, triangle can only be 180°. 6 124° + 60° = 184° straight angle must be 180°