📐 Part 1: Shape Properties and Angles

1. What type of angle measures exactly 90 degrees?

Acute angle

Right angle

Obtuse angle

Straight angle

2. Which of these shapes has exactly 4 sides?

Triangle

Pentagon

Quadrilateral

Hexagon

3. Check all angle types that measure less than 90 degrees:

Acute angles

Right angles

Obtuse angles

45° angles

4. A triangle has sides measuring 5 cm, 5 cm, and 7 cm. What type of triangle is this?

Equilateral triangle

Isosceles triangle

Scalene triangle

Right triangle

📏 Part 2: Measurement Practice

5. You are measuring an angle with a protractor. The baseline should be aligned with _____________ and you read the measurement where the other side crosses the _____________.

6. Complete the measurements for this triangle:

Use your ruler and protractor to measure the triangle provided by your teacher.

Side AB: _______ cm

Side BC: _______ cm

Side AC: _______ cm

Angle A: _______°

Angle B: _______°

Angle C: _______°

7. Two triangles are congruent if they have:

The same shape only

The same size only

The same shape and size

Different angles but same perimeter

✏️ Part 3: Construction and Analysis

8. Using your ruler and protractor, construct a triangle with the following measurements in the space below:

Side 1: 6 cm, Side 2: 4 cm, Angle between them: 60°

9. Explain how you would determine if two quadrilaterals are similar (not congruent):

10. What is the sum of all interior angles in any triangle? _______°

11. If you measured two triangles and found that Triangle A has sides 3 cm, 4 cm, 5 cm and Triangle B has sides 6 cm, 8 cm, 10 cm, what is the relationship between these triangles?

They are congruent

They are similar

They have no relationship

They are both right triangles only