Angle Masters
Triangle Time
Polygon Power
Similar or Congruent?
Mystery Round
100
What type of angles are opposite each other when two lines intersect?
Vertical angles
100
What type of triangle has 3 equal sides?
Equilateral triangle
100
How many sides does a hexagon have?
6
100
Figures with the same shape and same size are called what?
Congruent
100
Identify the given angle:
Obtuse angle
200
Two angles add up to 90°. What type of angles are they?
Complementary angles
200
Classify this triangle by sides:
8 cm, 8 cm, 5 cm
Isosceles triangle
200
True or False:
A circle is a polygon.
False
200
Figures with the same shape but different sizes are called what?
Similar
200
Polygon or not a polygon? If so, classify it.
Yes, this is a polygon; Trapezoid
300
One angle in a supplementary pair measures 72°. Find the other angle.
108°
300
Find the missing angle of the triangle:
50°, 60°, x°
70°
300
What quadrilateral has:
- 2 pairs of parallel sides
- 4 right angles
Rectangle
300
Two figures are the same shape and same size. Are they:
- similar
- congruent
- both
- neither
Both
300
A polygon has 8 sides. What is it called?
Octagon
400
A pair of vertical angles is shown. One angle measures 127°. What is the measure of the opposite angle AND why?
127° because vertical angles are congruent.
400
A triangle has:
- no equal sides
- one 90° angle
Classify the triangle by BOTH sides and angles.
Scalene right triangle
400
Name ALL quadrilaterals that ALWAYS have 4 equal sides.
Square and rhombus
400
A photo is enlarged on a copier. Is the new image similar or congruent? Explain.
Similar because the size changes.
400
True or False:
All squares are rectangles. Explain.
True because a rectangle is a parallelogram with 4 right angles and a square ALSO has 4 right angles.
So it meets the definition of a rectangle.
500
An exterior angle of a triangle measures 145°.
What is the interior angle next to it?
35°
500
Draw and label:
- one acute triangle
- one obtuse triangle
- one right triangle
Then explain the difference between all three.
[Must show all 3 triangles and explain!]
500
A student says:
“All squares are rectangles, but not all rectangles are squares.”
Is the student correct? Explain.
Yes. Squares have all rectangle properties plus 4 equal sides.
500
Compare similar figures and congruent figures. Give:
- ONE similarity
- TWO differences
Similarity:
same shape
Differences:
congruent figures = same size
similar figures = sizes can differ
500
A student says:
“An exterior angle and its adjacent interior angle are complementary.”
Is the student correct? Explain.
No, because an exterior angle and its adjacent interior angle form a straight line. Angles on a straight line always add up to 180° and angles that add up to 180° are called supplementary angles.