ABC is an isosceles triangle. (i) Measure the size of angles B and C. What do you notice? (ii) Without measuring it, look at the size of A. Do you think it is the same size as B or C?

Here's the solution for Exercise 1: Exercise 1 a) (i) Measure the size of angles B and C. What do you notice? Step 1: Identify the type of triangle. The tick marks on sides AB and AC indicate that ABC is an isosceles triangle, meaning sides AB and AC are equal in length. Step 2: Apply the property of an isosceles triangle. In an isosceles triangle, the angles opposite the equal sides are equal. Angle B is opposite side AC, and Angle C is opposite side AB. Therefore, if you were to measure them, you would notice that Angle B and Angle C are equal. (ii) Without measuring it, look at the size of A. Do you think it is the same size as B or C? Step 1: Visually inspect the angles. By looking at the diagram, A appears to be larger than B or C. Step 2: Recall properties of isosceles triangles. In an isosceles triangle, the base angles (angles B and C, which are opposite the equal sides) are equal. The vertex angle (angle A) is typically different from the base angles, unless it's an equilateral triangle. No, I do not think A is the same size as B or C. It appears to be larger. Last free one today — make it count tomorrow, or type /upgrade for unlimited.