Fill in the blanks.... Angles A are ............. because they are ................. ......................
equal, alternate angles
What is the size of a and b? Give the reason.
a = 70°- Co-interior angles add up to 180°. b = 70° - Vertically opposite angles are equal
What kind of angles are these?
Alternate angles
Calculate the size of angle p .. a) 95°, b) 85°, c) 75°, d) 65°
b) 85°
What is the size of v and u? Give the reason.
v = 100°- corresponding angles are equal. u = 80° - Co-interior angles add up to 180°
What is the size of angle a?
78°
What is the size of angle m and n? Give valid reasons.
m = 70°- Corresponding angles are equal. n = 110°. Angles in a straight line add up to 180°
What is the size of angle a?
89°.
Is it possible to draw a triangle with two parallel sides?
No!
What is the size of angle y? And give the reason?
73°.
What is the size of angle a?
102°
What is the size of angle x? And give the reason?
73°. Alternate angles are equal
What is the size of angle p? Give the reason?
p = 40°. Corresponding angles are equal.
What is the size of angle p and q? Give valid reasons.
p = 50°- Corresponding angles are equal. q = 130°. Angles in a straight line add up to 180°
Can you draw a hexagon with three pairs of parallel sides?
Yes
What is the size of a? Give a reason.
50°. Co-interior angles add up to 180°
What is the size of angle b and c? Give the reason for each
c = 80°- vertically opposite angles are equal. b = 100° - Co-interior angles add up to 180°
Complete the sentence .......
Corresponding
What is the size of angle z?
108°.
The definition of a parallel line is .......
Lines that never intersect
What is the size of angle a and b? Give valid reasons.
a = 120°- Corresponding angles are equal. b = 60°. Angles in a straight line add up to 180°
What is the size of p? Give a reason
110°. Co-interior angles add up to 180°
What is the size of angle a? Give the reason.
a = 60°. Corresponding angles are equal.
Mo thinks that the angle d is 108° because 72° +108° = 180°. Is she correct??
No! The parallel lines are shown with arrows so d = 107°
Find the size of angle a. Give reasons....
117°.
What is angle r? Give the reason for your answer.
99°. Any valid reason
What is the size of x? Give the reason.
120°. Co-interior angles add up to 180°
What is angle p? Give the reason for your answer.
87°. Any valid reason