Day 110Quiz 1
I can apply the skills taught so far, show my reasoning, and check my answers.
Show what you know
Questions 1–1 review Unit 7 (20%). The remaining 4 questions assess the current unit. Show your work, simplify exact answers, label units, and explain when asked.
Quiz
Begin with the review questions, then continue through the current-unit questions.
- Previous unit review
Solve x + 5 = 9. Check in the original equation.
- Current unit
Sketch a triangle with base 16 cm and perpendicular height 4 cm. Find its area.
- Current unit
Sketch a triangle with base 16 cm and perpendicular height 2 cm. Find its area.
- Current unit
A trapezoid has parallel bases 6 m and 12 m and perpendicular height 7 m. Sketch it and find its area.
- Current unit
A 6 m by 5 m rectangle has a right-triangle corner removed with perpendicular legs 2 m and 3 m. Sketch the remaining polygon and find its area.
Answers and reasoning
Reveal the teacher answer key
- x = 4
Subtract 5 on both sides. Then x = 4; substitution gives 9 on each side.
- 32 cm²
A = bh/2 = 16 × 4 ÷ 2 = 32. Two such triangles make a parallelogram.
- 16 cm²
A = bh/2 = 16 × 2 ÷ 2 = 16. Two such triangles make a parallelogram.
- 63 m²
A = (6 + 12) × 7 ÷ 2 = 63.
- 27 m²
Whole rectangle 30; remove triangle 3; difference 27.