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### Multiple Choice Questions:
1. **A triangle with all sides equal is called:**
   - The answer is **B. Equilateral triangle**.

2. **A triangle with two sides equal is called:**
   - The answer is **C. Isosceles triangle**.

3. **The sum of the angles in a triangle is always:**
   - The answer is **B. 180 degrees**.

4. **A triangle with one right angle is called:**
   - The answer is **C. Right triangle**.

5. **A triangle with all angles less than 90 degrees is called:**
   - The answer is **A. Acute triangle**.

### True or False:
1. **A scalene triangle has no sides equal.**
   - This is **True**.

2. **An equilateral triangle has all angles different.**
   - This is **False** (An equilateral triangle has all angles equal, 60° each).

3. **The base of an isosceles triangle is always the longest side.**
   - This is **False** (The base could be shorter than the equal sides in some cases).

4. **An obtuse triangle has one angle greater than 90 degrees.**
   - This is **True**.

5. **A right triangle has two acute angles.**
   - This is **True** (The two other angles must add up to 90°).

### Draw and Label:
You are required to draw six different types of triangles. I'll list the descriptions here, and you can use a ruler and protractor to draw them on paper:
1. **Equilateral triangle:** All sides and angles are equal (each angle is 60°).
2. **Isosceles triangle:** Two sides and two angles are equal.
3. **Scalene triangle:** All sides and angles are different.
4. **Right triangle:** One angle is 90°.
5. **Acute triangle:** All angles are less than 90°.
6. **Obtuse triangle:** One angle is greater than 90°.

### Find the Unknown Angles:
1. **First triangle:**
   - One angle is \( 41^\circ \). The sum of the angles in a triangle is \( 180^\circ \). So the unknown angle \( a \) is:
     \[
     a = 180^\circ - 90^\circ - 41^\circ = 49^\circ.
     \]

2. **Second triangle:**
   - Angle B is \( 95^\circ \), and angle C is \( 50^\circ \). To find angle \( A \):
     \[
     A = 180^\circ - 95^\circ - 50^\circ = 35^\circ.
     \]

3. **Third triangle:**
   - Given angles \( 57^\circ \) and \( 36^\circ \), to find angle \( a \):
     \[
     a = 180^\circ - 57^\circ - 36^\circ = 87^\circ.
     \]

Would you like further details on any of these answers or additional explanations?

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Here are 5 relative questions for you:
1. What is the difference between a scalene triangle and an isosceles triangle?
2. Why do the angles of a triangle always sum to \(180^\circ\)?
3. Can a triangle have more than one obtuse angle? Why or why not?
4. What happens to the angles of an equilateral triangle if one of its sides is extended?
5. How does the Pythagorean theorem apply to a right triangle?

### Tip:
In any triangle, knowing two angles allows you to find the third by subtracting their sum from \(180^\circ\).

The worksheet involves various types of triangle-related problems, including multiple choice, true or false, drawing and labeling, and finding unknown angles in triangles.

This Grade 7 math worksheet covers the properties of different triangles, including equilateral, isosceles, scalene, right, acute, and obtuse triangles. It includes multiple choice questions, true or false statements, drawing exercises, and finding unknown angles in triangles.

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